One tweak I cannot wait to see you roll out would be a smoother transition from Wail to yelp and back to wail, as well as when one hits manual, instead of cutting out when you let go, it should peak and hold (which it does) but it should crawl back down through wail on the way back. Those two things would make it just even better.
Other than that, it's spot on.
Keep up the good work and can't wait to see what's next!