Have a fifth City in the game with the political structure dictated by NPC's.
Laws devised as a Neutral Merchantry City/State
No protection within boundaries but a way for those who dont desire to participate in a tether, to work alongside bolstering Esterport as an up and coming City.
Develop Research for a Pylon for Esterport, allowing openings in trade between Esterport and Delve...pushing a furthering of the Free City and the merchants goals.
A Communications channel for rogue players to help Citymates within the City and plan events. No Tethering but also no Ylem bonuses such as Manipulation.
Ylem works, collection of Mists, purchasing wares, and gold tithe for ylem collection top three ranks for members of the City.
I think there are -alot- of people who are kinda over the tether system and being forced to either be Enorian or Bloodloch, the other two cities Spinesreach and Duiran Council are somewhat forced within the idealism of the others in the means of conflict despite perhaps organizational difference this is not going to change, and we -have- to deal with these other Cities and that will never change, and cant change.
There is no reason to have treaties or political grounding as its always just a status quo.
Consideration for a Fifth Player run city could also work...
Might shake things up a bit.
I know there are plenty of players who dont really fit the mold of Undeath or Light, and right now the RP in between isnt strong enough to not really change away from that.
I dont know the tether system is just boring and I havent seen any reason other than us being told "Well this is just how it is"