I'll have to see more of Wabbit before I make any judgements, but I'm optimistic that it's going back to its roots.
Be Cool, Scooby Doo on the other hand looks like shit. It's what I would imagine a Seth MacFarlane parody looking like, not the designs for an actual show. Actually, judging by that pitch clip I saw, the jokes sound like the kind of stuff you'd hear on Family Guy too. I guess Mystery Inc. was just a fluke if this is what they have planned for the franchise.
Tom and Jerry is going to be the usual stuff for that series. Disappointing and will pale in comparison to the original shorts, but nobody will care because T&J haven't been really good in ages.