If they're taking him a new direction, showing that prison helped him, then I'm all for Ben returning. We'll no doubt get "personality transplant" comments, but since he was in prison for nearly two years he's bound to have changed a bit.
Not bothered about it being a recast, in fact I'd be more concerned if it wasn't, and anyway, recasts are something I've always accepted as part of the nature of soaps, I've never seen why people make such a fuss about them. Also, DTC's casting has been spot-on 95% of time so far so I have faith he'll find a good actor.