It would be nice to be able to have processes that do things based on the input of a date field. Today I was trying to setup one as simple as "If <date field> is not empty", since it is not a required field in this form, and I couldn't even do that.
Other options could be if date is before a specific date, or after a specific date, or more/less than X days in the past or future, or even trigger a condition change on that exact date (is today.) For example, if someone requests something to happen on a specific date, it would be nice to have it send a notification and/or change the state of the ticket on that date, or maybe a day or 2 before that date.
It would be even better if these triggers could be set to include a distinction between work days and not work days (interacting with the set business hours and holidays.) So if something is set to trigger 2 days before the set date, but 2 days before is a holiday, it triggers 2 work days prior to the set date.