I didn't like them at first, but got quite used to them after a short while (once I figured out that you can turn without shooting, etc.) they could certainly be better but I think they work fine.
+1. There's not a lot of good mech games on iOS. I'd say the DG games are the best of the ones out there. I think there's a good opportunity for a dev to make a really great game in this area though.
ExZeus 2 has been announced. Sure you control a robot and the game plays like a shmup/3rd person shooter/flyer (tons of variety on this sequel, check the TA preview video), but it's not like we have great mech games on iOS.
I hope wii get a control option. Battle3D 2: Iron Punch - intense. Tha sound efx 7 music got me hooked. I have maxed out my arsenal 7 now on second run. Im havin fun switchin up my weapons.