Building upgrades

[Shandowlawl]

I am currently working in my altered melee map and would like to have a third upgrade for the main halls of every race. So far I found something for humans and undead but I would need a model for the Nightelves and Orcs T4 Main hall.

 

[konyvfalovb]

What if you use the World Tree's model (from DotA) and name for the Night Elves? Or a Tree of Power, with the model used in DotA. It is slightly different (OK, very different) but it is a tree and it is bigger and better than the tree of eternity.
Or just find something between the second and third main hall upgrade, and then the Tree of Eternity would become the 4th level.