I can't see that happening at all.
We have only a few bad guys left and way too many good guys. And the vaizards are on their way. We don't know who's side they'll be on but they'll probably fight Aizen too. Which means even more good guys.
If Hitsu can beat the number 3 Espada, there's almost no need for vaizards to get involved. Or will Kubo stray from the usual 1vs1 routine and have the good guys gang up on Aizen, Gin and Tousen once the espada got killed by Hitsu & Co?
"For Feanor was made the mightiest in all parts of body and mind, in valour, in endurance, in beauty, in understanding, in skill, in strength and subtlety alike, of all the Children of Illuvatar, and a bright flame was in him"