http://www.fantasyflightgames.com/en/news/2016/3/15/road-to-legend/
Road to Legend is a companion app for Descent that promises to revolutionize the way you play. In a traditional game of Descent, up to four players become noble heroes of Terrinoth, wielding powerful weapons and gaining skills as they move through a campaign. Opposing these brave souls is a single overlord player who commands the monsters and forces of evil, using their dark powers to destroy the heroes.
The Road to Legend app immediately gives you the chance to change these established roles by assuming the role of the overlord player, controlling the monsters and inviting you to explore the dungeon in entirely new ways. At its heart, Road to Legend introduces a fully-formed, cooperative way to play Descent by controlling all of the figures and responsibilities once handled by the overlord player—freeing you and your friends to all play as heroes and defeat the darkness in Terrinoth.
While descent has been going on for a few years, Imperial assault is still in its infancy so to speak. Given that descent lends most of its mechanics to Imperial Assault do you think a CO-OP only app will work. I would be keen as most of the time because I am the one that owns the game. I tend to be the overlord since I own the game but if an app gives me a chance to hero it out with my friends that would be great.