I am not sure how relevant this is to the OP, but I would like to add that I think it would be cool if we could have tiered base sizes, a main base can be built in a large region which has all amenities and generates power to run satellite bases which are smaller outposts that can be built as we open up the world. Satellite bases must be connected to the main base via a powerline which also doubles as a "monorail" that players can use for fast travel (This powerline can be destroyed thus making it something to protect). While the main base in an area should be the result of the entire faction's efforts, satellite bases would be built and opperate as guild HQ's (though anyone can use the base) and said guild would be responsible for it's upkeep and maintinence.
Each Satellite base can wirelessly power small mobile bases which can be deployed by squads (or solo if one wants to spend the resources). Mobile bases could be tracked vehicles which can hold a squad while in transport and once at a desired destination can "unfold" into a very small base. A mobile base can only be setup if it is in range of a Satellite base (or main base). These mobile bases can be destination points for the THMPR, a spawn point for fallen players, as well as a tool for some questlines.
Main Base - Faction driven
Satellite Base - Guild/Army/Clan driven
Mobile Base - Squad driven
Genius, save for a few things:
There will likely be need for more satellite bases than Guilds, so satellite bases will need to be rethinked (rethought? rethunk?). Perhaps they would serve more use as Terraforming bases, that expand faction territory and house refineries and crafting stations. Also, as such, they should only be allowed to be built on certain points of the map, near marked beacons. It would be fun if the opposing faction also built Terraforming bases and you had to destroy theirs before building yours.
Thumpers should not get their own bases. Instead, engineers could put up multiple Shield Points (1 per engineer) consisting of a reasonably-sized shield dome, some turrets, and a health/ammo regenerator.
Mobile Field Bases could be a more advanced version with a respawn beacon, basic utils (equivaent of a battleframe garage/station), vehicle spawn point, and link to a
Satellite Terraforming Base for power and transport/teleport (both ways, so it's easier for teams to call in reinforcements from the larger bases, as well as giving instant action to those looking for a fight). Also there should be a limit on Field Bases in a given area, you don't really need 7 in a 500 meter radius (unlike coffee shops).
Thusly, the 3 tiers would be:
Main Base - Permanent large lz and last line of defense (aka copa)
Terraforming Bases - Buildable (and breakable) checkpoints that can only be built at certain locations by either faction, as long as it links to another faction-owned Terraforming Base or the Main Base, to stake claim on territory.
Field Base - disposable outpost used to rally squads, call in cavalry, and beat a hasty retreat...as long as it stands. Also THMPRs cannot be transported in this way and must be escorted to the nearest friendly Terraforming Base normally.
BONUS TIER: Shield Point - built by engineers, consisting of at least a fair-sized shield dome, a few turrets, and a health/ammo regenerator. These can be built anywhere without limitation - but any given engineer can only maintain one at a time, so choose placement wisely.
Also, since were supposed to sink resources into terraforming, what if the TB's had a power supply that needed to be replenished that depleted faster the more field bases are deployed?