Pumbas Nakasak
Heading for the great escape.
Without seeing WWoHP and being one of the staunchest Disney fanbois on here I must say.... even if HP Phase II is REMOTELY like it is described, then Disney needs something to contend with it. Yes, rising tide lifts all boats and YES WDW is still the main draw for Orlando vacations... but Disney needs something new.
Look at it this way: Take HP and Transformers and everything else off the table... DAK and DHS still need expansions and Epcot still needs some TLC.
My take on the greatest source of discontent on this forum is that Disney in Orlando seems hell bent on doing everything but create attractions that lift with rising waters of expectation. The half day park as you point out would be a cause for concern at local theme park level far less one of the most visited places on the tourist map.