I am having a hard time thinking of a filter that will rank first by priority desc then by their child tickets priority. For instance
If the parent ticket has a priority of P1, but the children tickets have varying priorities within it, then the children do no remain "attached" to the parent ticket.
Here is my current filter:
project = MyProject AND NOT issuetype = "IssuetypeA" AND NOT issuetype = "IssueTypeB" ORDER BY Priority DESC