As long as its not like era's where players can buy very overpowered spam guns, then just be able to sit at a blocking place(between two walls that attacker has to get past) then spam like hell it would be fine if its not like that.
If basing is added I think it should be open place so players can dodge bullets go round in circles/etc and have the base/flag like in middle of arena.

P.s. its more of a we have nothing else to do thats decent, so players just make friends and try take bases/towers for something to do i guess. Also pk attacking is fun when there is alot of players.