I think Drill Claw should be able to be control in which direction it goes by using LK + MP + Direction. That way it doesn't have to always be going striaght foward and cornering people in the corner and killing them.
Drill claw is not only used for attack purposes, but also for escape ones too! Very usful in dodging supers and many more other purposes. I think DC should be added back on. Except limit it by number of times it can be used per min.