[Wahnsinniger]

Well, The Lord of the Rings universe has never really been magic-heavy. I haven't read the books in like ~7 years, but if I recall correctly, the only time Gandalf ever really used any destructive magic was frying a bunch of Goblins with lighting in The Hobbit.

But then again, with Morgoth/Valar/Miar being the gods that they are, Magic would fit in well enough. Such a mod would require making the appropriate map(s), and modding in a bunch of civs, so it'd probably be a lot of work.

I read the silmarillion again this past winter, so I think the civs would probably be:
Morgoth
Valar/Miar
High Elves? (the ones that stayed in Valinor)
High Elves? (the ones that followed Feanor back to fight Morgoth)
Dark Elves? (the ones that never went to Valinor)
Dwarves
Men
Note: I don't recall the specific names, like Noldar/Sindar and such.
And the "Characters" would only be useful as pretenders or heros, so you wouldn't get to use them all the much anyway.

In any case, I'm not sure how well Lord of the Rings fits in with the Dominions universe.