It might be a bit 'niche' but my current project would benefit from datatypes of the 'DatePicker' type having set-able date ranges.

by default, popping up the calander on the current date is fine, but some projects may require ranges. for example my current project is for a event website the dates of which are next year. Adding each event requires a number of clicks to get to the event week.

perhaps as per the jQueryUI we could set the start and finish dates [if not specified then ignored] as per the jQueryUI DatePicker demo, so either with specific dates or a range:

(new Date(2009, 1 - 1, 26))

or

('+1M +10D')

as per the demo: http://jqueryui.com/datepicker/#min-max