I would like to see a multiselect date field so that form and sheet users can select multiple dates in one cell instead of having to make separate columns for each date. For example if a course is held on 15 dates, I would want to be able to enter all dates in one cell.
I am running into a very similar issue. This comes up quite often. Would love to see this implemented. Especially when working with events, choosing multiple dates would come in handy.