AdzukiProductions
I already Voted for Hisagi, but I'll admit another option that I would like to see is Momo Hinamori. I feel that Chiaki would like her personally, as they're both hard workers (plus I'd always felt Momo deserved someone who'd actually appreciated her). If we're allowed to vote for more than one option, I also vote for Momo
Not sure how many suggestions we're allowed to suggest, but here's a few at the top of my head at the moment (not voting for at the moment, just suggesting): Grimmjow Jaegerjaquez (don't hate me if I misspelled this) Tatsuki Arisawa Izuru Kira Shino Madarame (Ikkaku's sister) Menoly Mallia (Arrancar 34)