I still don't like the raid system, it turns no-way in, to a one-way/funnel that's really easy to booby-trap and kill. And if Endermen can get around factions, why not use them as a natural breach? Much like the way many people use creepers to get into places. Or, during raids have all doors be opened? (Only problem is mods/admins have to go to each faction base and monitor door usage, and open them all. (Turn off build rights during raids?)
Also, no banking system? The lack of it really kills any chance for people to buy things or set up shops, seeing as your money is just going to get lost, one way or another.