also apart from those cowardly swine that crept around to rear flags, typically most of the fighting on infantry was between two flags - meaning only a short distance to travel.
The vehicles servers have a lot of issues - since you can get around from flag to flag quickly, it led to flag hopping.. instead of decent fights you'd be chasing round people capturing rear flags.
if youve got a vehicle to hand then great, if not your stuck on a large map with no decent transport. You certainly can't rely on the pubbies to actually come pick you up from anywhere. Vehicles also led to chopper whoring - where people had got very good at the attack choppers slaughtering people on the ground, with weakened AA they were very difficult to stop.
Infantry servers also helped prevent teh nubtards TK'ing for vehicles. The only remedy for this is to be admin on the server as kick votes require more than half the people on the server to vote and most people either don't vote or have opted out from all voting

The upside was unlike L4D the servers were great to setup