The forest creatures, even so very intelligent, don't build their own buildings, instead they use the natural resources and build their buildings in or around them. They always live close to the trees and know how to form them with magic.

Current thoughts of Forest Creatures races design:
The Forest Creatures have a unit called "Grovelord", which can control a tree for a certain amount of mana. This tree can now move and attack for you, so this is the basic attack unit of the Forest Creatures. The Grovelord itsself is also a pretty good attacker.
Your workers, the fauns, can now build buildings out of these controled trees. Note that all your buildings can only be built out of your trees. Because the Forest Creatures build their buildings directly in the trees, they don't need to gather wood - and they don't want to, either, because the trees are their friends.
So unto now there is only one resource planned for the elves - gold. There will probably be also a unit limit resource. This means that the elves have to gather very much gold for their units - more than every other race. No other race depends so much on gold mines, so the Forest Creatures will at first be in need to expand and secure a new goldmine. This is pretty easy because of the moving trees on which you can build your buildings on. You can also build defensive buildings on these trees. Forest Creatures are masters of mobility (opposite to Humans) and most dependend on resources given by the map (opposite of Gormits).

Perhaps the elves will be very good in an early rush, because they can quickly train their first military units - the controlled trees, and because their grovelord, which they have from the beginning of the game on, is also very strong in fighting (the trees are very weak), but probably to worthy for fight. On the other hand, you can just send your grovelord to the enemy and control the trees in his base. This danger can get cleared probably by the enemy's workers, who can simply chop them down :-D. Nevertheless, the Forest Creatures might be too powerful at the beginning - but on the other hand, except the Gormits, your enemy will have good means against rushes (town bell, mana shock, ...). Gormits against Forest Creatures might be imbalanced at the beginning.

Units