-wave 11 spawns usually appear on the spawn points nearest the extraction zone
-That said, I try to control wave 11 spawns in some of the maps when in a pug team by heading there. Again, the best strategy is to NOT head into the LZ immediately, and run around the map instead. With randoms this is not always the case >.<
Giant: in that relatively empty room. just across the LZ. the one with two giant boxes and a ladder. You need to stay there though for the duration of the wave so that enemies won't spawn there.
Hydra: on the upper levels, on the left side hallways going toward the control room. so that the enemies would all spawn in the open courtyard below
Condor: stay in the highest level. That negates the spawn at the topmost level and the one in the middle level with the lone half-crate. It'll be hard to stay in the LZ with attacks coming from above >.<
Jade: the upper level, near the ammo box. Enemies would spawn in the lower level with the wall and the two half-stairs though, and in that slightly open lab... But staying in that upper level is probably for the best because enemies won't be in a higher position relative to the LZ.
Rio: Drop everything and RUN towards the half with the LZ and stay in the middle or a little to the right part of that map (the ones with the two covers, with a nice view of the middle or the right paths). It always always spawns there even if someone is already standing at the LZ.
London: the lower area in the center of the map, the one with the ammo crate behind a giant crate. So if at least your teammates decide to stay in the LZ side, you won't get swarmed from the left as well.
Dagger: since you can't know which of the two will be the LZ, I usually hang around the open area at the end of the long hallway. Or if you're too far away, go instead to the right part of that snipers deck so enemies won't be coming from there
The following just comes down to personal preference since the tips won't be as helpful...Ghost: that room on the far right side of the map (near the other most visited ammo box). you have to arrive early though as sometimes they spawn directly above you and come down into the room. That causes enemies to spawn near the ammo box nearest to the LZ though
Goddess: if you stay in the lab, enemies would spawn in the lower level just to the left of the LZ
Glacier: too small, don't even bother haha
Vancouver: now that I think about it, I don't try to control it here since everyone seems to camp that upper level hospital room and then make a dash for the LZ...
Reactor: they almost always spawn in any of the 4 nearest spawn points in the LZ so I don't even bother anymore.
White: everyone almost always stays on that upper central area... just watch out for enemies coming up from the hallway as well.
-Final note: spawns replenish for each one that is killed by your teammates. You have to decide for yourself if you really have to go to your teammates. Just make sure you're ready for the enemies coming from the spawn you just left.