Sort Events + admin listing page

Currently events on the admin listing page (/wp-admin/edit.php?post_type=incsub_event) seem to only be sortable by date published. This gets a bit unwieldy especially when events aren't added in the same order they happen! It would be great if you could sort by event start date or by title.

I am able to hack sorting by event title by manually changing the URL to wp-admin/edit.php?post_type=incsub_event&orderby=title&order=asc however this obviously isn't very usable for clients!