I find it kind of weird that they would apparently have such an issue with what Wright apparently wanted to do after they apprently wanted James Gunn to actually go farther with GotG. I read an interview the other day with Gunn, where he said that he originally wrote a more straight forward version, but Feige and Marvel told him to "make it more James Gunn".
Well, Feige was reportedly the one who fought for Wright's version of things. It was the Disney higher-ups who didn't like what Wright and Cornish were doing. Chances are, the Marvel folks never changed their minds about Wright's vision for Ant-Man, but they're no longer the ones calling the shots since they've been bought by Disney.