My recommendation would be to simplify. All you need is light, medium, heavy, siege and fixed/turret mounts. Missile/torps are already balanced on ammo and speed-to-target or can be if they aren't. Why worry about missile/torpedo/launcher/slots?

Also, everybody should be able to launch torps from a planet, even if they have no other platform. But why make that hard?

So I have to ask, why has there been so much fuss over torpedoes. I liked the balance all the way back in the pre-release game where simply being slow and having half-ammo justified torps doing double-damage and you could place them anywhere you could place a missile. Like, yeah, torps are nasty but ...

Alright, alright, I'll register here... Interesting that there's so many programmers. I've been javascripting web-browsers since web browsers were a PITA (<=2011ish - started ~ '08). And all the server-side/general-code exposure has made me something of a generalist. Also node.js which is awesome ...