i've got a destroyer with primitive internal bays and doors. the doors do open at launch and sometimes they close afterwards then open again for landings...i think there is still a glitch in the animation or im just not using it right cuz sometimes my doors always stay open after launch...might have to ask Bobboau about that one. point is, it does work. is it worth it? I say yes. for starters its a nice bit of eye candy for player launches. secondly it gives the ship personality, it kinda makes it feel like home if your using it as the players home base, kinda like the "neat, i live here!" feel, and kinda makes me at least more willing to defend my home base, a little detail goes a long way. thats just me though.
i've got the latest version of the galaxy you posted at hades and its a good candidate for internal bays...it has the room, and it would be a kick a$$ upgrade both visually and feel wise. on top of that i've always liked the idea of a mission where the player has to snake his way into a large carrier and drop like a mine or bomb something, to kill it...one of those desparate plans. so a detail like that would work both ways.