I think we may need to realize that just because the powers-that-be recognize MGM's sorry state doesn't mean they feel compelled to fix it. I get no sense that Iger is personally invested in the parks the way Walt and even Eisner were - until guest dissatisfaction begins impacting revenue, it's not a priority.
The MGM makeover, unlike that at DCA, is the bare minimum they think they can get away with. SWL looks great, but remember this is the single most enduring, popular franchise in modern entertainment, one that Disney spent mounds of money to acquire, the pinnacle of Iger's acquisition philosophy, and its getting a land with two rides years after Disney bought it. Star Wars could easily warrant and support a full park and at the very least merits the treatment Uni gave HP (yes, that was two phases, but is there any evidence Disney is considering building another phase as rapidly as Uni built Diagon? In both WDW and especially DL they managed to build SWL in a location that makes expansion difficult.) As cool as SWL looks, given the nature of the IP, it still fits the "least we can get away with" model.
The rest of the MGM makeover is an embarrassment - a Six Flags level kiddie-land taking up huge swathes of space and the replacement of a classic ride.
SWL will be cool, but the MGM makeover as a whole borders on insulting. WDW knows the park has enormous problems, but they're betting guests are dumb or loyal enough to settle for a few cheap, heavily promoted changes that don't address the underlying issues.