For me, absolutely not! I have so many apps that I have paid for that I would be better off to give up on IOS and Apple and move to Android devices. Just as the Ipad 1 and now Ipad 2 are becoming extinct due to the limitations of the newer software, it would seem the only route to take, should they decide to make IOS 7 this way is to give up on Apple.
http://feedproxy.google.com/~r/gizmodo/full/~3/ofVWerFaIZw/would-you-pay-for-apps-you-already-own-again-in-ios-7-841026625