It would be really cool if there were cutscenes in the game, for dungeons and boss fights, maybe even with your custom character in it (I know they can do that in games). That would be really cool, especially if it had voice acting.
Also, about the different races, it would be neat if you could be a kind of enemy and that enemy wouldn’t attack you (I’m pretty sure this will actually be the case, at least the fact that you can be an enemy as a race. I just made a post about it), or you could get different stats based on your race, like more hearts if you’re a human, but more defense as a trork and such. I think this would add a deeper level of personalization, since every race has it’s own pros and cons, so it’s just preference.
Finally, I think a “Choose your own story” aspect would be amazing. So you could choose to follow Gaia or Varyn (although I’m really thinking they won’t do that, since he seems more like a final boss). But maybe that could affect what kind of magic you have or something. I don’t know.