Spoiler Alert, click show to read: 
Yes, it would take quite a bit of work, but it can be done. The papal thingy would work nicely with the elene faith as it is, though their will be a slight lack of nations to work with. However, several of the misc factions in the game could become playable, as well as a few hordes that could become available.
(musings)

For those who do not know, The Elenium and the Tamuli are corresponding series written by David Eddings. The entail fo a fantasy world with magic and the like, where an evil god and such are rtying to subjigate the world, and the hero, Sparhawk, must stop them with his companions.

I propose this mod (I need help with it, as I am new to modding M2TW) so that we might conquer the realm of another man's mind.

I am bad at writing these things, so...will anybody help me, or am I on my own in this?