Agreed. The current state of jQuery UI is what pushed me to consider other frameworks such as Dojo (which I'm really enjoying). I've also started using Bootstrap on a new project and really like it as well. I just need more components! :)
- Rich DataGrid with ajax pagination & filtering
- DropDown with ajax source for typeahead feature
I also think Bootstrap needs an initial set of distinct looking themes. Not just different colors but fonts, padding, sizes etc. It would help me feel confident that I would be able to create something that doesn't look like everyone else's site.