Freezing just because I can (and because I follow the manga, but this will likely suck as an anime but I'll follow it anyway).
Hourou Musuko and Fractale because noitaminA (thus about 50% more chances than any other given show that they will not suck).
GOSICK even though it's BONES (I don't really like the studio, but they did do good stuff... idk, let's just hope).
Beelzebub because I haven't watched a shounen by Studio Pierrot in a LONG while and there's a sane chance that it will not be a bad one.
And any other ones I'll be suggested along. Which will prolly be between Level E, Mahou
Shounen Akiyuki ☆ Shinbo
Shoujo Madoka ☆ Magica, Houkago no Pleiades, Tamayura, Mai no Mahou to Katei no Hi, Kore Wa Zombie Desu Ka?, Infinite Stratos, and Dragon Crisis!
Although in the end, all of the shows listed in this post (and probably the ones not listed too), aside for maybe one or two, will end up being disappointing or not fully developed as they could have been. Just as it always happens.
PS: I left out Wolverine because I honestly won't watch it (that's not the kind of show I look forward to from Madhouse), and KnTS2 and MitsudomoeS2 because, while I've been recommended them, I've yet to see S1 (I do plan to eventually watch them, though).