I dont think we need "moveable" spawn points, I just think we need more options to spawn to. Namely, to excape the wonder-campers.
I think every base, regardless of airbase or vehicle base should have each and every direction in their vehicle filled with a spawn point. No more bases with a single off site gv spawn point miles away near the enemy base. There should always be a spawn point to just off the base, say 1000ft to 1 mile out from the VH. This will put a major damper on vehicle bases being won a single enemy tank that has camped the main VH and an M3 runnin' balls deep to the MR.
There are countless bases that could use the "1000ft spawn". Camping takes so much away from the gv game it isnt funny. It isnt a "tactic", it is a cheap "gaming the game" trick. Likewise, in addition to the 1000ft or 1 mile spawn point from the base, why not have two spawn points near the enemy base instead of just one? Have them spread out a few miles and that too would seriosuly put a damper on the campers fun.