Currently in the middle of watch Baccano, and I'm really enjoying it!! The fact there are so many people on here that would like for it to have a second season tells me I'm gonna be watching some great developments later in the series.I loooove Devil is a Part-Timer! I wish it had a 2nd season too! I feel there's so much more they could do since they left a lot open.
I recently finished Maoyu and I think this should have another season too. It ended somewhat open with so many more tasks to be accomplished and I wanted to see more of the romance between the Hero and the Demon King! I grew to love all the characters and I would love to see more of them :')
And maybe Dance with Devils....this is more a guilty pleasure though. The plot is very predictable and though it wrapped things up with the guy she chooses (it's a reverse Harem anime) I still love all of those handsome Devils, Lindo is my fave! I have no idea what another season could be about but in a world where vampires, demons, and MUSICALS exist, I'm sure they can think of something. Yes, it is a musical anime.
EDIT: Totally forgot!! MOAR PANDORA HEARTS PLZ! I havent read the manga but I heard it deviated from the story. Maybe a more true-to-the-source-material version?? Seriously, how did I forget this anime. it was friggan awesome.