Haven't been to a WDW park yet...( I will in Nov. though

) But it seems HS and AK don't get very high marks from most. I still think both parks still have the potential to be full day parks that could rival MK and Epcot.
For HS, I would drop the whole backlot concept and re-work it to emphasize Disney's properties: Pixar, Muppets, Marvel and Lucasfilm. Each franchise would get there own area with rides/restaurants/shops. Of course I'd keep TOT and R&RC and update TGMR.
For AK, I'd scrap Dinoland and maybe dedicate an area exclusive to Australian or North American animals. Of course the Yeti would be un-strobed

and made show ready. Add in a few coasters and dark rides based on The Jungle Book, Lion King and maybe Brother Bear.
Just throwing things out there.