That might solve the problem for great apps -- but lets face it, a lot of the apps we see in the app store(s) out there aren't great. Which phones are end-user

That might solve the problem for great apps -- but lets face it, a lot of the apps we see in the app store(s) out there aren't great. Which phones are end-users going to buy? The ones with cool features that no apps use, or the cheaper one that runs all the same apps as the high end phone? And it doesn't solve the different resolution problem.... (Just playing devils advocate here -- your strategy is basically what apple has done w/ iPhone 1, 2, 3--and has been quite successful thus far. But had apple built a dozen phones in that time frame I don't think things would be playing out the same way).