I think the problem is the NA map is about twice as large as it should be. Factions have more territory than they need or could defend if it came to a war (looking at you FCC/Remnant), but there's nobody who wants to try and get on the map or expand their territory.
If someone went to war over territory when they saw an opportunity, they know they would likely incur the wrath of most of NA.
It really does seem like it's always been 2 sides on NA, those with us and those against us (and I'm sure FCC feels the same way). Nobody "with" Hospitaller holds any land, and it wouldnt' make sense for clans like Chaos or FIDLGB (pale horsemen) to try and pick up an FCC fief or two, because they would then have enemies attacking them from all sides.
This is a fighting game after all, and all this land is making it so fighting wars isn't a necessity, it's just something people do for fun. I personally think it would be better if EU and NA were all on the same map like last strat, there is no map divide, and defenders get to play on their server of choice. At least there'd be fighting for territory, and not just 2 sides "A or B" in every conflict.