I'd agree with Michaels direction - when you get used to the browser system it really is a powerful way of organising your file and once it's finished and we also have instances im sure it will be one of the best systems out there. I use the 'types' filter all the time, it's great for letting you very quickly isolate elements. Also the right click feature on a style instantly isolates that style without having to manually switch everything else off - very handy and quick.

EDIT: Although it would be nice to add a new style from scratch rather than having to draw something then select it and then create a new style ;-)