Multiple clip selection to select what clips we want to play next and then trigger this selected clips with a widget button.
[MT Edit:] This could be implemented in two ways (and maybe both are called for):
  1. When using a "Next Selected Clip" target, allow a 'multiple' selection, where you get radio buttons that appear on each clip, and can toggle each clip on/off either via a tap or by triggering a play/record action for that clip. Then a second trigger of the "Next Selected Clip" action will commit that selection and perform the action
  2. A modification to the "Select Clip" action which allows add/remove to/from current selection.