Well, well bro, I found two decent modellers; one of them is awesome as that 4 letter word that starts with "F" and ends with "UCK" (but likes whining a lot...) and the other one is who made almost all the IID-only effects. Here is my project, the 0.81 version is out already:
Well, sort of like an Additional Tower to the Castle, Different Effect on the Tree of Eternity (you know like now its somewhat fiery), for example you could make some Whisps circling around it or so (just an example) , same to the Fortress of the Orcs, you could make it round-like arena stadium, with towers around it and so on, something like that?
PS. its not neccessary to make them from the scratch, all i need is an Improved Castle (The human building), Fortress (The orc building) , Black Citadel (the undead building) and Tree of Eternity (the night elf building ) , sorry if im bothering you.