There's no option for my opinion. I took the closest thing to it and will explain here.
Major factions are an important story element. I have yet to see a single Star Wars RP site that doesn't include them for that exact reason. One needs to be able to keep track of who has what influence where. Without them, planet claims would be he-said-she-said, and there would be an unservicable amount of chaos in Chaos. Star Wars is about galactic political monoliths clashing with each other, often on unequal footing.
Likewise, while invasions are angsty dramafests, this is not by merit of them being invasions. The problem lies in the memberbase, not in the idea of two superpowers clashing. If anything were to be changed, I'd say it should be the design of how we handle invasions. Without them, it would be (as has been stated) a gridlock. Unhealthy for the memberbase, with no motivation to do anything.
Factions and invasions are, in my opinion, necessary evils. Their design isn't wonky, and they have the potential to be enjoyed. As members, we need to make the change in how WE handle them.