Huh. I'm hopeful that Mechwarrior Online will be worthwhile. I wonder if anything else could make use their controller easily. As far as I can tell, it's more or less a joystick, a keypad, and an extra screen. Maybe not the screen, but the joystick and keypad might be flexible for other things. It might be tough if it doesn't come apart though as a joystick is usually best centered (say for flight sims).
I dunno. I bit on Steel Battalion but I have a lot less money to through around these days.