Masaki-san no contest..It was sad to see her go the way she did protecting Ichigo-kun when he was trying to protect as it seemed everyone and Yuzu-chan would have a load off her back because she's still fairly young at 11/13 depending at which part of the series one's on so I'd say Masaki.

Kariya. I would like to see a fight between him and Ichigo with full Hollowfication. Also would liked to have met Ichigo's mother.