We have established a bit of project management workflow and ,for reasons beyond the scope of this request, we would like the following functionality.
We use Parent tickets and their ticket number to track projects.
We use Automation to create subtickets for the various phases of a workflow. Below is an example of Automation for the Design Review phase.
Automation Action Screenshot

The problem is each design review subticket is created with same ticket subject.
If we could use
Email Template Tags in the subject we could eliminate the manual step of changing the Subject. We'd really like to be able to use this syntax in the subject so they are each unique
Design Review-#TicketID#-#Subject#
In anticipation that someone says "Why do you need this information since the ticket is linked to the parent?" Well, it's a longer answer but succinctly stated, we need to see the parent ticket# (which is our project number) no matter how we may view the subticket. The ticket subject is the only data that is globally available in all ways a ticket could be viewed.
We'd very much appreciate the expanded use of these template values in this "Add subticket" automation action.