Re: Large scale battles in future Trek
I think that both the original series and the reboot universe strongly imply that there are very few Federation starships, at least comparable to the Enterprise, so a mass battle would be pretty jarring.
There was a mass battle in the first film between Nero's ship and a Federation fleet, but it was off screen.
"Who are you?! And how did you get in here?!"
"I'm the locksmith. And... I'm the locksmith."