Ok, first of all, let me say that I know none of this is lore friendly. I know it's not for everyone. I don't really care what people think about it, this would only be for my own use.

Now, on to my question. I have decided that I would like to replace an entire race in vanilla skyrim. I want all NPCs to appear as a different race or created race from a mod. I know how to do this and have had lots of expirince with TESCS and the GECK, but what I need to know is other than dialogue inconsistencies, will this cause any other game problems? In other words, would this be doable without messing up my game?