I can see Fleur being added to the mix and perhaps one or two more, who are compatible with the others. I'm certain Dumbles is not going to appreciate Harry's trust vault being absorbed back into the Potter family fortune, nor is he going to appreciate just how much power Harry now has. Meanwhile, things are developing quite nicely with Harry, Daphne, and Tracey and 'twill be interesting to see who else fits. I could possibly see Hermione fitting as she's fairly unbiased for a Gryf. If compatible and willing participants can be found, he probably should have partners from all the Houses to expand his influence.