While this idea would be cool in theory (especially since Xenoverse has it), I don't think the people here have the skill to program something like that. They would have to create new skills, new skill animations, new skill images, new character customization options, new animations for that, balance racial stats, create new classes and balance those, and many more things I'm probably not even aware of. Simply put, I don't think something like this is very plausible. My guess is most improvement focuses will be on balancing, adding something like night/day, minor yet important changes that aren't too complicated to set up yet improve overall gameplay.
I know how to model 3D Characters in Unity I dabble a bit, its possible they'll just need to expand the development team for different areas. Course we're not a full sized company so the speed at which it will take will vary.