MagisterCultuum
Great Sage
I still prefer the benefit of costing the Barbarian State some traits, and giving them enough traits to make them almost insuperable otherwise.
Also, the barbs should have more types of units they can build. I would love to see some arcane/summoner-trait boosted barbarian arcane units showing up late in the game if you don't manage to eliminate Barbatos (um..why cant the barbs build adepts? Of course it would fit better if the units were still called which doctor/shaman, etc), plus Aggressive/Charismatic/Raiders boosted barbs while still under Orthus's rule.
Now that I think of it though, allowing the Sepulcher to allow any arcane unit on the tile to cast Lich would be really cool. This could work kinda like how any angels can be sacrificed on the Pyre of the Seraphic. I don't think this would be overpowered since liches don't start with sorcery, summoning, or any levels of channeling, and since there is a limit to how many liches you can own at once (although I think this limit should be increased). This would let you pick whether you want a normal Archmage-Lich or a Summoner-Lich (like Barbatos himself was). If this idea is implemented, I hope a new death III sorcery spell is added (either to replace Lich, or better yet in addition to it). Actually, I hope a new Death III (and Spirit III) sorcery spells are added anyway; I'm not a fan of spells that a unit (or worse yet, an empire) can only only use once.

Now that I think of it though, allowing the Sepulcher to allow any arcane unit on the tile to cast Lich would be really cool. This could work kinda like how any angels can be sacrificed on the Pyre of the Seraphic. I don't think this would be overpowered since liches don't start with sorcery, summoning, or any levels of channeling, and since there is a limit to how many liches you can own at once (although I think this limit should be increased). This would let you pick whether you want a normal Archmage-Lich or a Summoner-Lich (like Barbatos himself was). If this idea is implemented, I hope a new death III sorcery spell is added (either to replace Lich, or better yet in addition to it). Actually, I hope a new Death III (and Spirit III) sorcery spells are added anyway; I'm not a fan of spells that a unit (or worse yet, an empire) can only only use once.