When a Jira ticket gets a new comment from a validation or deployment, it's a pretty standard message:

Deployment succeeded: link...etc.
Deployment Notes:
Source: ----
Target: ----
And then a table of differences that were pushed through.

My thing is, none of this is customizable, whereas I'd love to be able to potentially change what's automatically appended to our tickets to make it more user-friendly for the reporters on those tickets.