That's great idea for a mod, not sure how this would work out in "normal" games.
Some more in-depth ideas from me:
- only possible within RC/OM range (maybe even less than RC range (can't find proper words for that))
- thus impossible with RC/OM/Repeater
- They aren't "ghost", they are visible to anyone.
- They take BPs and if killed (see later) they go to BP Queue like regular buildings
- - Another idea: They don't take BPs, but you can't place more than maxbps would allow
- Placing such building would give half (or so) of the regular build timer.
- An idea: they are visible but non-solid until being built (not starting until someone is "in" it/skipping to next building in such case), if an enemy deals any dmg (dretches dont hit it) to it or walk into it), it disappears. Bullets (humans/granger split, snipe) go through it (yet kill it)