There are already myriad devices which record. This device will *never* have a DVR and doesn't need one - it streams digital content. It's not a tuner, it will never have a DVR - other products exist and do that. This is not a me-too product.
As for live sports, what does that have to do with a device that streams digital content? Do you ask your DVD player manufacturer this question?
If the idea is to sell a lot of this next-gen

TV, we can't take these kinds of positions. If you have a pool of people that want Blu Ray, and it doesn't support Blu Ray in some form, it doesn't get purchased by that pool of people. If you have a pool of people that want DVR functionality, and it doesn't support DVR functionality, then it doesn't get purchased by those people. Etc.
If we drink the koolaid that Apple has historically wanted us to drink, then only those who find enough value in it with us buy the device. That hasn't led to "no longer a hobby" success so far. Continuing to drink the same koolaid doesn't seem likely to lead to a massive success in the future.
It's abundantly clear that devices like BD players, DVRs, etc (still) sell to the marketplace. Buyers want to buy such devices. Either Apple makes something that win that money over Sony, Samsung, etc or they stick to the same guns and expect the world to come around to their viewpoints (and watch that money go to Sony, Samsung, etc).
I own the current

TV. It's great for what it is. However, I too wish it had a few more features. The few more features that I wish it had likely differs from the few more features whoever is reading this wishes it had, but on the whole, there's probably a cumulative list of 10+ more mainstream wishes that would address the bulk of the "crowd" of such device buyers.
Give the market what it wants, and sell a ton of next-gen

TVs. Try to make the market want it the way you want them to want it, and sell a whole lot less units because the buyer's money will flow elsewhere.
Apple (or you) don't want the next-gen to have a BD Player built in? Fine, how about some open hardware (like even normalized USB ports) so that a third party could build an add-on for those that want this feature. You don't have to buy the add-on if you don't want it, but those that do want that feature in one box (to rule them all) can get it.
Apple (or you) don't want DVR functionality built in? Fine, open hardware and third parties (like Elgato) could cover that base as well. You don't want or need that feature, don't buy it. But those that do want that feature could get it through this next-gen solution from Apple (plus an add-on).
Etc.
On the software side, an open platform- be that apps or otherwise- could make this the ONE box capable of existing (terrific) features plus all the other software wants. Netflix app. Hulu app. ABC app. Wii-like games. Etc. You don't want more than an iTunes-locked system; fine, don't download any of the apps. You do want much more than just iTunes (an iPod for your TV), now you have your pick thanks to third party solutions.
In other words, Apple can still make the cheap base platform to be

TV1080p such that it is pretty much what we have now with 1080p hardware, and leave up to all of the rest to third party hardware makers and app coders to fulfill the wishes of just about everyone else. This satisfies the crowd that blindly accepts everything that Apple serves ("720p is good enough", "bag of hurt", etc) while also giving the rest of the market the opportunity to get what they want.
This is quite analogous to selling Macs, with the flexibility for third parties to add functionality in add-on hardware and software. I think if the Mac was as locked down as the

TV, I wouldn't be typing this on a Mac.
If the goal is to sell a ton of

TV's in very high volume, while feeding both the crowd who sees it "as is" as perfect as well as the crowd that wants it to potentially be "one box to rule them all," that is how to get the job done. And that's the next-gen

TV i hope for (with dollars readily waiting to buy it).