There are a lot discussions about the wpa and aw. AW is extremely strong long lasting dmg, hard to recover from. If rogues don't have bonus TDs they can't do it or at least is very hard. If mystics have CS and WTs they definitely can't do it. If they can do it... well it's not funny if you are the mage.
So here is a more 'balancing' idea. Nerf guilds production from 0.02 wizz/guild to 0.01. Triple bonus for mystics(0.03)/maybe double bonus for heretic(0.02). That way wpa will become much harder to obtain and mystics will need less overall wpa and less time to get it. AW won't do such high dmg that recovering from the war is going to take weeks. The dmg will still be significant and important but it will affect the province only during the war not for the next 2 wars.
Nerfing wizz starting bonus will be needed.