This looks like a serious technical challenge for a not-very-useful result. How do you know people want this? Can you use this technology for something with a higher value than cartoon scenes?
It is a challenge nevertheless, which is why i'm doing it for fun. it's unique, has a wow factor, and would personally use it for expressing myself. I have no clue if people will want it so i'll try my best to make using the app fun for them as well.
Hopefully you'll see how fascinating it is when i post a video of the real time facial feature detection i have already completed.