Personally I'd love to see Legions on the Android platform. It has a large audience of existing users and may potentially explode with the Ouya (already on the market), Madcatz MOJO, Nvidia Shield, Google's rumoured system, and numerous other consoles that I've missed. So, yeah, I think there could be a huge potential for the platform, especially for smaller Indie projects.
As for playing Legions with a gamepad, I think it could happen. Tribes2 did the gamepad decently on the PS2, and I like to think with enough cleverness Legions could be controlled comfortably enough with a gamepad. Might not reach the same level as precision as the keyboard + mouse setup, but it could definitely be playable.
Legal issues, manpower and technical issues would be the main hurdles, though.
Anyhow, good suggestion, and Seymour definitely sees the logic behind it.