I am sorry, but I am not completly new to this game, yet I don´t understand at all your name system
Tho if it would be up to me, I would have those kind of mounts:
Energy
Hybrid - (True railguns, creating energy, kind of hyperspace, rail between weapon and target then sending ballistic payload, do not mistake with gauss guns)
Ballistic
MissileSizes are fine as they are, but I would split them to atleast two technological tiers.
Tier I What we have right now
Tier II For advanced weaponry, but also supporting Tier I
About energy weapons, I would probably add some tag for Beam/Projectile type.