Renewal on 64 is a spawn trap galore

Im guessing you mean on breakthrough. Im on last gen consoles so weve had 64 man maps/games from the beginning.

Youre right that the attacking team can get stuck pretty easy. But i found a way to combat this and it USUALLY works.

Get in a fast vehicle. I usually use a lav as i dont feel bad about leaving those laying around. Haul booty to the far right side, theres a kind of trail/road that runs aling the edge of the map. Follow it to back behind A2 theres like a ridge back there, hide an insertion beacon.

Your squad will spawn there and you guys will attack a2. Theres going to be next to no one at a2 because the entire enemy team is pushed up in the mountains beyond a1, as soon as you start taking it, most of their team is going to start falling back. You probably wont take a2. Youll probably die and have to respawn on your insertion beacon a bunch of times. But because youre attacking a2 and the enemy team is having to fall back to protect it, the rest of your team will have an easier time pushing up to a1.

Worse case, it doesnt work and you have to repeat everything from scratch, still better than getting sniped 3 secs after you spawn.

I also do this on kalediscope except go far left instead of far right, but hiding the insertion beacon is harder