Interesting. UX would be improved by keyboard-relatedness. You might consider some kind of animated 'panic countdown' to speed up *dither*. I don't doubt that the single progress bar would be kinder chunked into four sections - even if you don't name the sections. Would be interesting to know how many participants check out 1/3 of the way through with such a daunting-looking way ahead. Thanks. Now I am going to fire myself.
Mysuper.fan