Corridor battles were awesome in GC. You had ISD Judicator, cap ship boarding, that space station with the TIE Avengers you had to find and destroy with detpacks.
Problem with lag -> Reduce view distance and just don't implement too many long, straight corridors. Worked with ISD Judicator.
Problem with grenades -> Remove grenades for that map.
Anything else?
"One of the bitches actually gave birth while she was attacking, and her puppies joined in on the carnage."
--the awesomeness that is Boatmurdered.