I am suggesting that two TB3 ports would have been sufficient.
* Since no one yet knows what the real bandwidth is without some tests, let's work with your assumption of 10Gbit/s. I only hope it does not mean that there is only 10Gbit/s split across both TB3 ports on the right, in which case Apple should have just used USB-A 3.1 ports.
My assumption is not 10 Gbit/s, it is half of of TB3, ie, 20 Gbit/s.
Let me clarify: the TB3 ports on the left side handle 40Gbit/s split. Fine, but tell consumers. There are those who will experience a performance penalty when using an (unsanctioned) eGPU with any other TB3 device on the same side. For most other purposes, the bandwidth will likely be sufficient for two standard TB3 devices, both of which can be daisy chained, thus eliminating the need for gimped TB3 ports on the right.
You can (a) count those 'consumers' at one hand and (b) they really know what they are doing.
The TB3 ports on the right side offer no advantage over USB-C 3.1 Gen 2. By claiming these are TB3, which they kind of sort of are, Apple has introduced another variant into modern ports.
Nonsense, TB has a number of advantages over USB-C, speed is just one of them and even the speed would still be twice that of USB-C. Start with daisy-chaining, continue with direct PCIe access and finish with the option of very long (optical) cables, don't forget TB target disk mode and don't discount the option of re-using existing TB devices. All of that is added by making the righthand side ports 'lower-speed' TB3 ports instead of just USB-C ports.
You sound like a sullen child that after hearing that cannot have all the cake is stamping his or her feet and proclaiming that it doesn't want any cake at all.
First it was USB-C 3.1 Gen 1 (MacBook) and Gen 2 (MBP); now it is TB3 full (left side) or reduced (right side) bandwidth with no indication about which is which. I bet most reps in the Apple Store are also unaware.
Sure, but 98% of all customers won't be affected because having only a total bandwidth of 60 Gbit/s (40 Gbit/s for the two left ones and 20 Gbit/s for the two right ones) instead of a total of 80 Gbit/s simply is irrelevant because they never even get close to saturating that bandwidth.
You are really creating a storm in a teacup.
Since TB3 on the right side has limited bandwidth, Apple could have offered more common ports that are still in use today (USB-A, SD card reader). But this is too practical and asymmetrical for Apple.
You know full well that that was never an option. Apple considers USB-C as a perfectly fine full replacement for USB-A.
I love the concept of TB3, but any computer with TB3 only is 2-3 years ahead of its time, minimum.
And you don't have to buy a MBP with only TB3 ports right now. You can still buy the previous year model. And if you keep your laptops for at least two years and can plan ahead, you won't need to buy a TB3-only MBP for the next two to three years.
Keeping TB2 around is confusing and has convoluted their product line.
Except that Apple isn't keeping TB2 around. From a compatibility standpoint, the new plug design is the most important change TB3 brings. And those right-side TB ports are clearly TB3 in plug design. And there other benefits of TB3, for example the option to use a cheap passive cable if 20 Gbit/s are enough for you. TB3 also ups the amount of power TB can pass through from 10 W to 100 W, and it makes that bi-directional. Claiming that Apple is keeping TB2 around is simply wrong and you should know it.
Every manufacturer other than Apple seems to realize that computers are used in the real world in a mixed environment, where ports which Apple have declared to be legacy are actually ubiquitous.
Tell me something new. Do PC laptops still have VGA?
The use of adapters for everything only introduces one more point of failure, especially for something as simple as a thumb drive.
Tell me, what incentive would you have to buy a USB-C thumbdrive if all computers still had USB-A ports? You wouldn't switch to USB-C until all computers in your life also had USB-C. The main thing this achieves is to make the transition during which your devices can't use half of the USB ports on your computer longer. Any transition is painful, often it is best to get it over with rather faster than slower.
The 15" is already losing one TB3 port which will have to be dedicated exclusively to power when needed because even Apple's own adapter doesn't provide enough power pass through to (maintain a) charge while using the adapter! Really?
Not if you use a TB display or TB dock. And what adaptor are you talking about? TB3 to TB2?
These new machines may represent the future, but the technology doesn't match the design. Apple is free to push the envelope, but most people have to do real work.
That is rich coming from you. Adding USB-A ports would be a much bigger design mismatch.