I'd need to see how they'd be implemented. Planetside's battles will presumably be moving across the map so regions of the map might not be touched for a while. If someone "deployed" an outfit base it sounds like they'd be forced to defend it so they'd probably only be deployed in the middle of battle in specific areas a faction controls.
Not really a fan of the idea overall. Sounds almost as bad as the
outfit housing idea Graywolves made.
However, if they mean like deploying small bunkers or wall emplacements then go for it. That kind of stuff would be cool to see on the battlefield assuming it's destructible. Not sure if anyone has played the game Savage 1 or 2, but it was an FPS/RPG mix where players could build. (Kind of like Sony's new Starhawk game).
Would be nice if it was class based system for RTS type construction where each class has things they can spend outfit resources on (if they are granted that ability by their outfit). For instance, if engineers could build a bunker or k-rail facing a certain direction to use as cover. Then have for instance a sniper perch for an infiltrator to use (small tower with a ladder). Then let medics call in healing pads on the battlefield. (for instance behind an engineers bunker). Lot of ideas there rather than focusing on a large base. That is you could build a base from smaller parts to defend an area.
// edit basically they should focus on things to build a front line to defend or push. Not some static huge cost base which gets deserted as soon as the battle moves on. Ideally anything built could be deconstructed in an instant if it's at full health for part or all of the resources back.