Now that the Wood Elves DLC is announced i was wondering; a fundamental problem was that they couldn´t really hold lots of territory
So my idea is a "Forest corruption" or "Wild groth" corruption for the Wood elves
For every 2 percent of corruption you get a 1 percent Movementbuff and the non Wood Elves factions loose 1 Percent.
This enables you to hold your regions better and to react with less forces by marching them to problem areas.
Also a a side note i would give this also to the Beastmen, because
1. They alway have to hide in highter difficulties
2. Why do they have a corruption which destorys forests if the are, by lore, a race which mostly lives in Forests.
This would be nice especially if they wil be able to "hold" ruins (after a rework)