I could give you guys a relatively exhaustive talk about what a "realistic" space battle would probably be like. It'd be much different than you may imagine and fun/exciting in a rather different way. I can also explain how generic sci-fi tech of shields, energy weapons of vagueness and super sensors create a completely different battle environment than how it's portrayed (for starters, shield scales with ship size thus bigger ship almost always beats a smaller one while fighters are hopeless to do anything).

But you know what? I don't.
As others said this game is about having fun and me pretending to be an actual expert on this matter is not that. I could tell this in PMs to people so they can get a few exciting new ideas for their space battles but otherwise? I leave this out from here.
Rather I am going to finish up my profile for the Martians.
Tomorrow...