Ok, now here is something that I have never seen done.
We have seem awsome hollow powers like Barragan's, Stark's, Szayel's, & Zommari's. With that in mind, with Aizen saying that he is more powerful than all of the espada combined. Plus I'm sure that Tosen & Gin are both stronger than any single espada. So with that in mind, what kind of new hollow abilities could you see the trio having? Especially Aizen to be more powerful than ALL of the Espada combined (if its true...which I'm sure it is)
Feel free to speculate on Wonderweiss too if you'd like!