Please add more sectioning to the demos so it's clearer which item is which, and what all are variations in use case for the same item, as opposed to just listing everything one after another regardless of relation to each other. Split things up by object - a section for 'simple dialog'. Then split that up by usage examples - the diferent sizes, and the different possibilities of how they will open if something goes wrong or not. And then a new section and header for the process dialog stuff. Etc.
Basically more sectioning on each page would be great. More visual organisation, so it's easier to find specific things and scan it all and tell what's going on when not necessarily familiar with it (or so there's no confusion that the three toolbars are in fact just one toolbar with different usage examples). (Yes, I know, this is mostly just a thing for you lot, but it'd still be great to be able to figure it out myself and make sure I ain't broke something when fiddling, and this would probably still help you add things to it and such, too.) (Also the widgets page is terrifying.)