If you are making factions,please make the faction property unprotected,let it be a secret base,underground,not a 1 man faction with protected land,its so unrealistic.
I want that too,but you are only going to get it if you whitelist the server because there will be bunch of little kids joining the game and griefing.
PS: I played on a Whitelisted Tekkit server a long time ago and he had a plugin that can see every block that was removed and chest opened or something like that.
There was never any griefing because of that witouth need for extra plugins.
I found a wireless redstone mod for 1.7.4 SMP and i m sure it is compatible with Voltz.
http://www.minecraftforum.net/topic/328725-147wireless-redstone-v161/
Something like this would be nice also.
http://minecraft-mods.org/vertical-redstone-mod/
Voltz really needs some kind of wireless redstone mod or at least something like red alloy wire that you can drag on the walls,i don't think it is to hard to make/implement.