View Criteria for linked tickets (Parent-Child related tickets)

View Criteria for linked tickets (Parent-Child related tickets)

Could we have some filters which can be used on views about linked (parent-child relation) tickets please.

The views that I'm looking for, do require the below filter items and visual guides:
  1. a view which lists only Parent tickets which have Child tickets
  2. a filter value for Parent tickets with a set amount of Child tickets
  3. a filter item to list Parent tickets which are closed but have open Child tickets. If it's not already implemented please also consider integrating a warning message when you try to close a Parent ticket which still has open Child tickets (or at least give us the option to enable such a warning for Parent tickets from system settings).
  4. An option to enable row indentation for Child tickets on views (or a clear visual signage to easily distinguish between Parent and Child tickets on views such as using different background colors for them)
  5. a percentage icon, color or value on a table view (could also work on Classic view) which calculates and displays the closure rate for all Child tickets which would give a quick idea about the completion status of the Parent ticket. (If 8 of the 10 total Child tickets are closed then this value should be equal to 80% on the Parent ticket's row)