I don't necessarily want it to go back to the Insomniac Trilogy's style (not that I'd complain if it did), and wouldn't mind revisiting the Legend universe as I actually liked it as much as the Insomniac one, but if the took the best of both, and combined it, they could have something spectacular.
Heck, Spyro: A Hero's Tail was an excellent game, and was on the way to really fleshing out the series for more modern audiences. It'd be great to see something like that again.