Thank you so much for this! I had a similar hang up with Zammad a while ago.
We had the idea to solve this using a mouseover popup:
I would like to have the functionality to see a quick ticket summary when hovering with my mouse over a ticket title.
Most ticket titles are very vague so I have to open all tickets to find out where to dispatch them. Being able to get a quick glimpse at the tickets content would speed up our 1st level dispatching quite nicely
A mouseover summary popup is already done nicely with the customer field: