not much - probably hardly noticable for a normal player doing his "normal" RP. - it depends though..
it might be that there curve isn t a linear one. for example - the lag might get gradually worse up to like 10 players in a dogfight - but while 11+ would have dropped it further NOW .... it might remain stable THEN.
Starport - upon the novelty of the hitboxes - once rumored about like 20% reduction of lag ( but that was by no means a scientific figure - or even an educated guess - it might have been utmost guesswork or wishful thinking )
gameplay wise - we are no.... wiser than anyone else. - we are THE server to test that stuff out. - no other server can so easily test large battles like discovery 24/7.
in any case - we shouldn t expect missiles to start hitting from any angle but "full in the face at nearly point blank" - most probably .... the known mechanics won t change much.