[Carbon Copied]

Cut the amount of small bases from the map and introduce some hard standing tower-esque points to spawn from. The towers serve no other purpose save to spawn from (no vehicle pulling) as there's bases and the major airpad towers for that; there needs to be some form of interim point that serves as an objective to make a push easier. Not required to be held in order to cap a base, you don't need them to advance on the lattice; they just serve as a tactical advantage point to both hold and deny. Introduce that and the AMS sunderer in it's current mobile and (some argue) vulnerable form has a place rather than trying to act in the void of mechanics between.

Maybe even think outside the box, do something cool and engaging where the AMS interfaces with these spawn towers as a requirement to powering it making the AMS a sort of "spawn generator". Taking the Sunderer closer to the base still has the risk/reward but having these interim points gives a safer option beyond "put it behind a pebble and hope someone doesn't c4 drop pod it".

Apart from that - spawn tubes, base design and a move away from these coffins that you maerialize in will alleviate spawn camping; potentially not cure it indefinitely but reduce it's occurences. The current design simply leaves no choice but to spawn camp as that is the "destroying the spawn tubes" alternative; lowering shields in the last few seconds of a base flip is a poor, lazy substitute.
This is just another topic that has had it's drum beaten loudly against deaf ears before though.