If navalized UAV's advance as rapidly as they might, you could see an experiment using an LHD/LHA platform like Jimmy Carter's "Sea Control Ship" program. If successful you might start to get purpose-built UAV-carriers for ASW & over-the-horizon air defense.
The angled flight deck is handy for simultaneous take off/landing operations, so I would keep that. But something along the lines of the Essex class would be about the right size, IMHO.