[Rupert]

I'm not sure that the "Nova Gun" can be considered a rebadged "Phaser". Nor is a "StarTorpedo" an especially obvious ripoff of "Photon Torpedo". On top of that, nova guns didn't really work like ST phasers at all. Startorps homed, and over really long ranges, and weren't total fight finishers the way photon torpedoes were presented in Trek. Also, Space Opera's screens+armour defenses didn't work like Star Trek's excepting in that shields could fail if hammered on for long enough (and unless the ship was sm,all and the attacker very powerful, it took a long time to force a ship's shields down in Space Opera)

Oh, and TISA drives don't work like impulse engines at all, and FTL certainly wasn't like ST's warp.