It’s a promising start - as you say, it’s certainly barebones!

Poss roadmap items:

* Can the original organiser set some limits around which days can be selected? Or even lock it down so _only_ those dates can be chosen from?

* Introduce the concept of times too - what’s the expected duration of the event? This should help participants choose their availability.

* Edit your responses.

* Leave your email to be kept up-to-date with changes.

* Main display of results from all participants - add a calendar view.

* Highlight or sort the most popular/feasible dates