Not me, but that's because I buy under contract, so it's every other year. I really don't play that many games on the phone, but I do play some. Thus, games haven't been a big issue for me.
I really don't think the new sku every year was that big of an issue. It's may be possible to upgrade. I just figured it's more a pricing and availablity issue. I'm assuming that Ouya has a target price point they want to hit for the street. It's possible that for new CPU, say the Tegra4, it could cost them enough to exceed that target. Plus, I don't think they'll have the numbers to be able to entice the CPU market to shift supplies, assuming it's limited enough, from the major mobile device makers such as Samsung, ASUS, HTC, and so forth.
My guess as to the whole Tegra3 versus Tegra4 is more mental. It's not quite the bragging power. Yes, it's not as powerful as a Tegra4 would be, But ti's not like a Tegra4 is going to bring graphics prowess of a 360 or PS3 It just may not able to handle as many characters and so forth. That said, doesn't mean there won't be fun games to be had. And really, I don't think it's going to make that much difference, especially if you're getting developers who are already in the Android platform, since they're use to having to make games that will not always been run on the latest hardware
Ultimately, the success lies in the content available for it. It'll be a chicken and egg situation. Need good games to bring the people in, but you need the people to bring more developers, which increases the odds of having good games.
Personally, although I'm getting one, I'm taking the wait and see approach. I think the concept is interesting and could be good for the gaming industry. I'm hopeful it'll have a good measure of success. I think a million or two units would be outstanding.