No no no no!
Edit: Sorry. But, please, no! Davros was killed off in Genesis. That was an excellent story, but the point was they killed him off. By ressurrecting, him they then
ruined the whole point.
Besides, the Daleks were always better as original monsters deciding their own fate, rather than serving some deranged lunatic. This is pretty sad, but i used to feel quite strongly about this!
If you want an evil genius mastermind ressurrecting, why not campaign for the return of The Master!