For PvP, Railguns or Bust. For PvE ya can do whatever the buggers ya want. I agree ya don't ever want your RCSs right on the surface of your Craft unburied or even a T1 Pistol from some schmuck fresh out of an Escape Pod could blow them up for easy sabotage of SV Performance. I too recently experimented & discovered ya could use Glass with the Tint facing out to hide your Spotlights from external view yet still having your Spotlight Lights flashing out & doing their job... but I would consider doing it optional & nowhere near mandatory considering the biggest amount of Glowiness on your SV is from your Thrusters if you're placing them normally & not doing the 'Thruster Bury Cheese'. Also sticking Grates in front of Thrusters to act as sort of Vents that can give them a little protection is a valid tactic but I personally don't think I ever lose a lot of Thrusters in PvP Combat... in PVE I can imagine the tactic bein useful for your front & side Thrusters vs those POI Laser Turrets.