I'm a big Dave Hill booster. The overbearing asshole persona is transparent posturing that is really funny once you're in on the joke, much like a certain someone's prickly grouchiness. Tasteful Nudes is a very funny book, and he seems like a class act.
I *do* think, if he's willing, that Mike should stay on board with Dave... I think they'd make a good pair, and that Dave would play off Mike's weirdness well. With Mike's blessing, we should definitely lobby for it.
Overall, it won't be TBS - nothing ever will be - but it's got promise to be a solid followup in whatever form his show takes (also, let's face it - odds are, Spike will call in within the first month, and it'll be unclear if he'll know if anything has changed).