Interesting thought, they have yet to explain some of the characters having cat ears / tails. There is a lot of basic information they just haven't elaborated on in this game. So far, we can tell that the 7 main places we hear about haven't been the only lands. So that has me curious as to if we will go to other areas that aren't connected with the original 7.
I see a lot of lore potential beyond the main character quest line.