sophie
Break My Heart
then tell me what the limit in technological level is.
I'd say the limit is that it doesn't put the game out of balance, or allow for you to do stupid, cheap things.
For example nukes: You can just drop them on any city you want, and since this isn't real life, there's no reason to not do it.
CG's plasma rifles, on the other hand, are actually supposed to be equal to, or in some cases weaker than assault rifles.
Your star destroyers allows you to fly around and destroy whatever you want. I'd say your hovercraft would be fine given that a.) the fighter planes of the other nations are comparable (to some extent), or b.) it is more powerful, but the rest of the nations are ok with this, and it doesn't totally put you out of reach.
My perspective on it, though I'm sure further votes will define what, specifically is to be done with futuristic technology.