The only reason I want flash is for video content. I think what Apple should at least do is work with more content providers, like Google Video, Break, Veoh, all the popular ones.
But, with the impending SDK, content providers may be able to just do this themselves, but will they have enough of an incentive? Ultimately it's up to Apple to provide its users with the best possible experience, and this is more beneficial for them in that regard.
I do hope they'll at least add Google Video.