Your wish has been granted. The next version will have haptic feedback. I couldn't make it as "smooth" as in the stock app, the QML interface seemed not able for it (or at least I couldn't), but it's pretty close - a bit stronger though.

In retrospect I wished I hadn't started doing it, for a non-paying job I used too long iterating and testing what values would work well. But now that it's done I hope people will find it useful :-).