Songbird - playable character in Marvel Ultimate Alliance 2. She's a knockout... in more ways than one. Part of the Femme Fatales boost along with Sue, Ororo, Ms. Marvel, Jean, and maybe one or two others.
They retained a lot of same playable heroes from MUA1 for MUA2. Except for Spider-Woman - she becomes an NPC - wasn't too happy about, but at least you get to see her.
So far since X-Men Legends - they haven't done a single Marvel Universe team game without Wolverine, Storm, and Iceman.
Deadpool sort of took over Nightcrawler's spot after XML2. Jean was an NPC in MUA1. I wondered if there would be consequence carry overs from MUA 1, but there really were not.
Many characters make indirect references to apparent disappearance/demise of Doctor Doom and the chaining of Loki as well as a battle with Galactus (FF2 film).
They surprisingly went with the Civil War storyline with a tie-in in the first act to Secret War. Still it wasn't an absolute crossover for the story as certain characters didn't die like they did in the comics.
Anyhow I've rambled enough on this... only to conclude I just stare and admire your skills at rendering heroines!