I agree. The most important thing about this change is that it allows people to play with styling more easily. As a bonus we get a new default style that looks more modern than the old style.

My personal preference would be for the style to have a left hand menu, like the Python docs. It's now possible for me to play with that idea and, if the result is convincing enough, try to convince other Haskellers that it should be the default. If I can't convince others, I can always use a browser style switcher to have the docs render the way I want in my own browser.

Cheers,
Johan