I played only the Bamyan and Fallujah ALT layers.
Bamyan : I like Bamyan
Bradley's to OP - killfarming the bots and infantry can watch it. Map is nice. I like that the grass isn't too high and the bots sticking with half of its body out of it and so visible for players. The few intense firefights i had without IFV support was good. Bots came from 3 different directions, the range of the gunfights wasn't to far or to close for ACOG-Kits. Camping hills with an apc is a problem of many maps like Archer, Lashkar, Kashan, Bijar, Marlin and MORE ...
I suggest let one Bradley in and replace the others IFV with Strykers. They have only the 50cal RWS and not a 25mm Bushmaster cannon with a shitload of HE/AP rounds, ATGM Launcher and 7.62 coaxial with tons of rounds as backup.
BlackHawk's - SOAR's are OP when you park it for longrange firesupport on a mosque roof but that wouldn't fit in our server rules i believe. This can be done on everymap where a BlackHawk spawns. I love seeing a BlackHawk giving firesupport from air how it is in reality. Using trans as CAS is to 99% not allowed on Deployment servers, the last 4 or 5 good visited ones, but we shouldn't take over this Deployment NO TRANS CAS RULEZ mentality. In COOP we can do thing what never would be tolerated on Deployment servers. Dreams can become true.
Fallujah : I like it much.
Starting the map from this area is nice. Different gameplay - now its more crossing the long roads and not walking along them with maximum viewdistance. Here you have to keep your eyes open in every direction and spotting a bot is not so easy anymore as on the current layers where you seeing them from far away coming. Now it s more CQB and bots with AK' in CQB is a challenge.
I heared already static weapons (bipods) but i suggest to put more in. In COOP AAS4 you can use them better as me in COOP-Insurgency because of the flagcaping/objectspawner system.
I will write you a PM how you can let them dissapear. I dont understand why i dont get this idea before. Sadly it works only in AAS-4 and not COOP-INS. Same trick can be done for off-board bot mortars on bamyan to prevent hill camping.
Fallujah without navmeshed asylum basement is a NO GO. It's like taking out the static island from falklands map. Also upper floor levels aren't navmeshed. I saw also some spots where the navmesh sux but i cannot understand why it happen? Seems to me that one of the eastern edge muttrah buildings having/causing a strange boundingbox. Your inf layer works also with the old navmesh.
I also suggest to keep on with the tests because i (maybe more) wasn't able (latetime) to test all of them. In the moment, i haven't prepared enough for coop insurgency tests so you can use DEV2.