Sounds cool, green flag from my side!
Just consider these things
A. You can side with either humans/non humans
B. Both side should have totally different endings based on what choices made (be a good ending, bad or a epic ending in which you successfuly form a alliance between both races
C. The player character should be the centre focus, not that you are helping a guy to save the world, that said the mc must be point of focus
D.skills, languages and relationships should be presented in simple understandable form. For easier understanding (not unless you want it to become like way walker university lol)
E. Romance...finally if your going to put romances and choices be sure to put them as best as possible a slight error can spoil whole plot. And provide a clear romance end (epilogue)
These are a few points ill like you to keep in mind when making your title. And best of luck im looking forward towards your title, it certainly looks interesting