First, I would like to state how big of a fan I am of the current Mod as it is but I can't help to wonder if a Mod as popular as this one may have Modded by other Modders for enhanced gameplay?

yes sure, there's RFC Epic, or various religion-based mod components

Apparently on CFC mods of mods are called "modcomps". Don't as me why.

Anyway, here's some for RFC: http://wikirhye.wikidot.com/rfc-modcomps