Just imagine it:
One player could take on the role of Exalt and throw an extra bag of spanners into the works for the XCOMers.
I'd also like to see firestorm miniatures, a great big mothership miniature for a mothership final mission, and those lovely mech suits!
Those are just a few thoughts I had on the back of our first games today (courtesy of Santa), which the family really enjoyed - despite being comprensively thumped by the app.