How many times it happens you'r attaking or defending a field or a base from GV, you run your own GV, run trow possible camping enemies, kill those are mooving, hide, move again giving attention, finally reach a good point where defend/attack and start a GV battle?
To me it happened a lot of times but I just stopped it due the "damn spawn". Too many times I kill the same guys maybe 3 or 4 times without have the time to move/hide/preposition after a 1st fight time...or worstest, when you run out of ammo just because the same 3 or 4 guys keep spawning at every time you kill them. The result is usually the same, by spawn to spawn the enemy finally get your position, keep spawning waiting to get out of your view (or just till you don't have the time to aim) to kill you.
Same problem different behavior, run an A20, kill the tanks rolling to your base/field...maybe you have just the time to watch around after the 1st or 2nd kill and the same guys (those you killed 3 sec before) spawn in a flak and shot you down.
Imho, for any spawn, (hangar or in enemy country) there should be a time delay, dunno ow long and that's why i'm writing it, just to discuss and find a solution to this issue wich is far away from any simulation and quite close to all quake, doom, Unrial turnament games.
Have fun!