making defence way easier when there's already defensive spawns doing most of the job
having to either save them (scan all sectors -> huge performance problem) or spawn them every time
ability to pack them and use them as free static weapons anywhere else
often the spawning of static weapons fail and they pop upside down, that's why i've given up putting them on hostile bases (happens with friendly statics around fobs too)
in my experience AIs in static launcher are even dumber than usual (they hardly do anything before they die)
wouldn't know where to put them in good places or which direction to face. More often than not they'd end up facing a wall.
Add static weapons to the important resource sectors. Like Factories and Military Bases, maybe Radio Towers too.