What happened to the other thread? It couldn't have died yet?
At present NO WDW park will be impacted by this. None. Nada.
And if Disney were to integrate Marvel characters into their Orlando parks (and honestly, there's only one park where they fit at all ... they would literally destroy the mission/focus of any of the others) ... they would be bound by Universal's exclusivity arrangement for any of the characters/properties they are currently using.
That means ... the biggies like Spidey and Hulk and Fantastic Four and Captain America can't be used at WDW. Period.
Unless Disney makes Uni an offer it can't refuse, which is highly unlikely.
I know this site is based on theme parks ... WDW theme parks ... but Disney purchasing Marvel wasn't based on attractions for WDW.
It was based on getting control of the 7,000 characters (most Americans likely haven't a clue who 6,995 are) that Marvel owns. And using them across many platforms ... think movies (even royalties right now), think Disney XD, think Marvel Marts packed with comics and other merchandise next to Disney Stores and a huge retail location at DD Anaheim (prototype), think regional entertainment centers that won't cannibalize from WDW/DL but add a new revenue stream ... and yeah, think theme parks ... just not at WDW right now.