Why do you need INTERNAL expandability? What the hell is wrong with EXTERNAL expandability?
The old Mac Pro was limiting. I had to pay extra for those drive bays and the extra cooling required and everything else in that enormous casing (which also came with a footprint cost), but 4x3.5" SATA is just not the right combination for me. And I never use the optical drive so why do i have to pay for that?
This machine is being touted as the most expandable Mac ever, and that's exactly what it is. With Thunderbolt 2 you can connect ANYTHING to it, without having to take up unused space (ie. with the previous Mac Pro's footprint) on your floor or desk, and without having to pay for configurations you don't need. This is perfect for me.
I'll concede that including two really expensive GPUs that are not changeable might be a problem, if that is in fact the case, but we don't even know that yet.
You're all complaining about how this machine won't be upgradeable in 5 years or even 2 years, but your'e missing one really important point. Macs are the most upgradeable machines ever, because they HOLD their VALUE. Sell this one in 2 years for $1000 less than you paid for it and buy a new one. This is almost the ultimate in modularity.
This Mac Pro is the way of the future, just like the original iMac was when it introduced USB and removed floppy drives and all the legacy connectors (ADP etc). Just like all the new laptops that are removing optical drives and the other old legacy connectors (FW, etc).
If you don't want to have to upgrade all your old legacy hardware then DON'T UPGRADE YOUR MAC PRO. Keep using your old legacy Mac and your old legacy hardware for as long as it keeps running for you.
I for one see a very comfortable future with this new design into the next 5 to 10 years. External expansion is perfect, because, sure, I have to upgrade everything to TB now, but once I've done that, I'm set for another 5-10 years. (I'm basing that on how long FW lasted) I can replace my Mac Pro in a couple of years without having to replace all my external storage and other options, because I just swap out the core machine (the Mac Pro), and plug everything in (via thunderbolt) to the new Mac Pro I get at the time. Then repeat 2-3 years later, or whatever.
This is the way of the future. If you don't like the future then keep your old Mac Pro or iMac or Hackintosh and stop complaining.
This is the ultimate solution. What the hell is wrong with you people?
Easy there tiger. I'm not a fan of the new design. There's no need to be so upset that I don't like it. You can have your opinion, and I can have mine. I'm not stopping you from liking it.
I will however, take issue with a couple of the points you've raised. First, I believe you are vastly overestimating the cost of including internal drive bays. It does not drastically increase the cooling necessary, or require additional heat sinks. Those are primarily for the CPU and GPU. The only additional costs of including them are the extra case size. Take a look at case prices, they're not going to break the bank, even for nice ones with good build quality.
Additionally, the vast majority of pros will use more than the included flash storage. So if the odds are that it's going to be used anyways the vast majority of the time, why treat it as such an optional feature? I'd much prefer to have everything included in the same box than have to trail cords all over. On a side note, this also decreases efficiency. You'll have to power it separately using a separate power supply. So ... how exactly is including internal drive sleds limiting?
Secondly, including an optical drive doesn't really increase the cost by that much to you. But hey, since its largely an outdated standard, I'll concede that its omission in the new Mac Pro is not terribly important.
Thirdly you mention that
If you don't want to have to upgrade all your old legacy hardware then DON'T UPGRADE YOUR MAC PRO. Keep using your old legacy Mac and your old legacy hardware for as long as it keeps running for you.
Do I really need to reply to this? Can you not imagine a scenario in which both legacy and current hardware would both be valuable? First, I'm not sure what you're referring to as "legacy hardware", aside from an optical drive (which, blu ray isn't exactly legacy yet anyways). PCIe is not legacy hardware. And just because certain standards are still used that you might refer to as "legacy" doesn't mean a professional doesn't want the newest processors and up to date graphics cards. Take, for example, a video professional who does a significant amount of video editing, and gives the work to clients (or perhaps samples), on blu ray discs. He could, without a doubt, use the latest and greatest processors for rendering work (hence the need to upgrade). However, having the "legacy" technology is still a must, as blu ray is still used for many HD projects, rather than having to purchase a hard drive, when the customer requires a physical copy.
Thirdly, you mention that
With Thunderbolt 2 you can connect ANYTHING to it, without having to take up unused space (ie. with the previous Mac Pro's footprint) on your floor or desk, and without having to pay for configurations you don't need. This is perfect for me.
I am glad you find the new Mac Pro suitable for your needs. However, you can't exactly connect ANYTHING to it, via Thunderbolt. For many applications (external storage for example), the 20Gb/s it provides should be more than enough. However, a 8x slot provides nearly 4x the bandwidth, and the x16 slot provides even more. External GPUs will suffer severe penalties, especially for compute work. Why would you want an exernal GPU you ask? Well, probably if your workflow uses CUDA, and you need nVidia GPUs.
Additionally, once you start adding all these boxes together, the footprint starts to increase.
Suppose, you already own a Mac Pro with 4 internal drives (plus a SSD boot drive in the second optical drive slot, a blu ray drive, a 128 GB of memory (8 x 16 GB), and an OWC Accelsior (basically a PCIe SSD). Well, you could put the blu ray in an external enclosure, as well as the 4 x 3.5" drives. And you'll probably have to find an external PCIe enclosure to put your Accelsior in. (Oh, and, you'll only have 4 memory slots in your new Mac Pro, so its actually a down grade in that respect.) See my point, now I've got at least 3 extra boxes, each requiring their own power supply on my desk, with 6 extra cords. Suddenly, it doesn't seem like such a reduction in footprint afterall. Additionally, I've now had to buy ~$1,000 of "adaptors" to make it all work.
This is my main problem with the new Mac Pro. Sure, its a great machine, and a fantastic piece of engineering. But they just made it smaller than it needed to be. For example, it is now only available in a single socket configuration, presumably due to size limitations. That means you are now limited to 4 memory slots, and 12 cores (exactly what we had before). If Apple hadn't been so obsessively concerned with reducing the footprint, they could have included a dual socket option for those that would benefit from it. And if most folks are going to use internal storage anyways, why externalize it?
If all you want it a fast, powerful machine with not much internal storage, and you don't need more than 12 cores, this machine is great for you! But maybe Apple should have made 2 offerings then. A Mac Mini Pro (or something like that), and a more capable platform for those that would benefit from it.
As you say, the future for some may indeed be this new Mac Pro, for those who don't mind connecting all their essentials with boxes and cords, or for those who don't need them in the first place. However, for those who need more than 4 slots of RAM, dual socket configurations, and the convenience of internal storage (or rack mounting capabilities), the future for them just might be HP or Dell workstations. In fact I suspect many of them have already switched before this announcement to Avid or Adobe.