Seeming most starts used to be inside of 2.5k the longest it would take to meet up with someone would be about 15 minutes not hours. (If you move with a purpose)Its not like we don't want to support large or infinite maps, but lets be realistic. A very high quality high performing map beats an infinite or very large and ugly slow performing map. I prefer smaller maps because it takes hours of real time to meet up with your friends or hours between frags which is boring for pvp.
As far as boring for PvP, that what WAS great about PvP, even if you started a server on day 100 you could travel far out and hide until you catch up enough to defend yourself against the leveled players. Reducing the map size only gives less places to loot, and makes it harder for players to progress and formulate defensive and offensive strategies.
Couple that along with the bonus xp for all teams and you effectively shun any solo player who wants to PvP. Whats the point, everyone's base is only a short jog or bike ride away from everyone else. (8k map)
That team of 5 who level twice as fast, unlock all content twice as fast and have you outgunned by 500% will find you and wreck you no matter what before you have the chance to get on your feet. Just saying smaller maps without the option to have what we had before does nothing for PvP. (I guess maybe you can meet up 2 minutes faster on start, big advantage)