He worked on D3, Blizzard didn’t like his direction and basically dissolved Blizzard North and rebooted the project. Why in gods green earth would they contact him about a project they fired him over?
Everything the dude has worked in since he parted ways has been mediocre to bad, with MHO being the only mediocre title, which was really only because of the Marvel license. If he was in such demand or proved he wasn’t a one trick pony with Diablo, he’d be somewhere else.
But he isn’t. He’s on his own making niche games that don’t sell well at all. At some point you need to look back and realize that 1, it was really the Schaefer brothers that were more successful, and Blizzard Irvine that forced Brecik to change his game, that made him the name he is/was.