Hovering is required for the PADI OW, but watching students hover over a platform a few moments and then leaving the platform and dropping like a rock is an eye opener and makes you wonder.
Anyway, the PADI course is sort of performance based, you go as fast as your skills allow you too. You perform the skills to your instructors liking and move on...complete all the skills, pass the test and your on to the open water dives. That is how my training went anyway...2 pool sessions and a couple classroom sessions and to the quarry we went.
This has been debated over and over though. Make the classes harder/longer, less people are interested or have the time, make the classes shorter/easier....more people get certified, but are not as prepared.
I plan on becoming a PADI instructor. I have already decided that I am going to expect a lot from my students, I won't teach any other way. That I look forward too.