I think it's a good idea, but improbable to do, if not impossible. It could be done, I think, but I think it would require dozens of players constantly playing in the conflict. Yes, cruisers duking it out whilst battleships raining fire and death down upon dogfighting light-fighters would make for some excellent role-playing, not to mention that it would be incredibly fun and challenging for those invloved, but short of doing the whole thing over destructible space stations i don't think it could be managed without drastically altering the game files. Freelancer isn't designed like the big-name MMOs, territories can't really change. It's a good idea, and I'd like to see it happen, but I don't think it can.
Besides, the Houses are already occupied with war, I don't think it could really work with the smaller factions. Although, maybe if the players take a larger (see: much, much larger) role in the wars, something might be able to worked out. I don't know, that would probably be impossible.
Hm I like the idea but how about we change it to there's one system that you go to for fighting RP like lets say Hm well you get me but no one keeps the system it is owned by everyone:D:yahoo::cool::lol::):D:P;):ylove: