Tyler WM (http://www.tylerwm.com/) shows a lot of promise. It's a pretty good 1.0 but there are some edge cases that still prevent me from using it full time.
Definitely don't let this discourage you. I've only been using vim for about six months and I do not know all the commands and modal changes on this diagram.
The great thing about vim is you do not need to know very much to be productive, but every day you learn something new that will make you more productive.
While this is a great reference writing a vim plugin or looking up the behaviour of a specific command, I don't really see it as a learning tool.