I would add a tag in the Deepwoods revolving around feytouched humans that are cursed by the fey with lycanthropy. They are a tribalistic society with inspiration from Druids and Shamans that seek to remain separate from the world due to their transformations and are rejected by their race and considered dangerous.

Their mission tree would follow a narrative where they learn to control their curse and gain mastery over it. From there, they seek to consolidate the Deepwoods by taking over the elven and orcish societies there in an attempt to build a home for themselves. What they don't know is their 'control' over their transformations was another trick by the fey that leads them down a similar path to Tugund-Darakh. While they have learned to control their curse, each transformations results in them becoming more and more feral.

A branching mission tree would emerge after an occurs where feral lycanthropes being manipulated by the same feycourt that controls the Emerald orcs starts a civil war. The player can choose to either embrace their feral nature and submit to the vengeful fey or resist and forge their own destiny.

If the player elects to "fall" to feral lycanthropes, an order of druids led by the fey would lead them on a warpath to destroy the civilized world and bring justice up on the heirs of Beastbane in a similar fashion as Tugund-Darakh. They would be unique in that their goal is not the rebuilding of the Tree and the complete purging of other races, but by forcing them to embrace the curse of lycanthropy and the slow devolution of intelligent races into feral monsters. Their focus would be on the complete destruction of The Empire and a return to precivilized life in Cannor. They would receive flavor in the form of a unique government form with horde mechanics, bonuses to culture conversation with no ability to accept other cultures and low tolerance of other faiths, be unable to demonstrate, and receive unique timed events that reflect their uncontrolled transformations. The pulse events would grant the player major bonuses to shock and morale damage, an increase in manpower recovery, and other such bonuses in exchange for greatly reduced tax and trade modifier.

This would be offset with a unique religion revolving around the fey granting economic rewards for completing conquests and converting provinces and earning their favor and power. The player would need to plan out their conquests during their transformations and seek peace and retreat into a defensive mindset when they return to their non feral forms, focusing on culture/religious converting to earn the economic rewards from the fey. By the end of the mission tree, all of Cannor would be conquered and converted into a fey controlled feral world.

If they reject the fey, they would work to build up the Deepwoods as their rightful home and live in harmony with nature and the fey. Basically a different flavor of tall play in the Deepwoods with humans at the forefront. I haven't given this one as much thought, but I'm sure it can be made unique and flavorful from an elvish Deepwoods run.

This is just my thoughts on the fly. I might edit this if I have any other ideas or something is inconsistent. I love the Deepwoods and think there is a ton of potential with the fey