personally, i want no game no life got the next season
Gekkan Shoujo Nozaki-Kun really needs a new season.
I will be quite angry if it doesn't get a third season.
totally agree with the three above^^ I think many shoujo could use more seasons, like Kimi ni Todoke or Blue Spring Ride, I'd like to actually see the couple spend time together like in Ore Monogatari. Chihayafuru definitely needs a third season too!
Kill La Kill, DBZ(a good one), and toradora(the ending makes me think about afterwards)
Accel World. I'm still hoping for a season two.
Shokugeki no souma and of course the new utawarerumono. A lot more, but these just put into my mind
Bleach needs a wrap-up Season, would love a new season of No Game No Life and Re:Zero.
I agree with Gekkan Shoujo Nozaki-kun, but I was actually pretty satisfied with the ending of Toradora (which held its place as my favorite romance anime until Golden Time)
I would be interested in seeing a continuation of Ga-Rei: Zero, considering it was actually a prequel to the Ga-Rei manga.
We need another 1000 episodes of one piece there aren't enough!