so who would you like to see Hitsugaya go up against, either as a rematch or just in general, go as crazy as you like.
Unfortunally, Kubo designed to much good guys, and not a much of bad guys. However, there is a chance, that Kubo keeps several new Vasto Lorde class Arrancar for future fights. I think that Wonderwice may be a VL. From the current Espada, the VL are probably Stark and Barragan.
I'll go with Wonderwise against Histugaya. However, Wonderweiss, tanked Urahara's shikai attack, while Ulqiuorra's hand was burned up like Grimmjow's (in manga of course), so maybe Arrancar kid would be too much for Hitsugaya, so I would make him co-operating with another Captain/Vizard.