I would love to see a way to trigger workflows from forms using any form plugin (I use Forminator).
What I am technically trying to achieve, is offering guests a discount on their first order when they sign up for our newsletter (MailChimp). I would like them to sign up using the form I've built in Forminator, and for it to trigger a workflow to auto generate a coupon and email for the guest.
Obviously, it's impossible to create an "integration" for every form plugin on the market. Maybe there could be a way similar to your Guest Capture CSS class?