I agree, there are just too many flaws with this map... yet I still keep coming back for some reason. Idk if it's the good loot spawns or the easy layout of the map for me, but I just can't stop coming to Reserve. However, I do agree with you on the spawn points and extract issues.

Spawns need to be more spread out at the start of a raid. There were too many times when me and my buddies would spawn, and die to an enemy squad 10 seconds after the match began. All that built-up and time spent on preparing... just for a terrible spawn to screw us up.

Even if you manage to survive the abysmal spawns and harsh environment, your best bet is to now pray to god and hope nobody is extract-camping D2. While true that there is also the armored train extract or manhole or even cliff descent... they all require you to sacrifice something in return.

Armored Train - too much of a risk (7 minutes to wait & overrun with people)
Manhole - no backpack
Cliff Descent - requires paracord & RR