DMC4 controls could easily be done on the Wii.
No More Heroes anyone? Now No More Heroes is by no means the same game, but offers us a unique control system from which could act as a template to explore a possible DMC control scheme, using motions to accent attacks and movements.
Either way, as long as a control scheme was made available for both Gamecube and Classic Controllers just as it is with the RE4, the player is garanteed a control scheme that will satisfy them.
1: Stop making shooters. Please. You're not Valve or Free Radical.
2: Stop trying to force photo-realism down my throat until you can get out of the uncanny valley. Work on style and presentation instead of just pixels and bloom.
3: Try something weird and new, and hope we like it.
You'll cut costs way more than you cut revenue, and thus increase profit.