I know this is a big one, but it would be nice if picker supported accordeon style ajax support. Basically option groups would be all collapsed by default (at initialization any option group can be expanded). Option group content only loads on expansion via ajax. Obviously option group has to be clickable (click when collapsed results in expansion and ajax load, click when expanded results in collapsing).
That goes outside the scope of the plugin, this is meant to be used as a "select" enhancement. What you are talking is not possible by simply replacing a select tag in your html.
I know this is a big one, but it would be nice if picker supported accordeon style ajax support. Basically option groups would be all collapsed by default (at initialization any option group can be expanded). Option group content only loads on expansion via ajax. Obviously option group has to be clickable (click when collapsed results in expansion and ajax load, click when expanded results in collapsing).