In Youtrack' issue oveview, there is a possibility to see the issue list as a tree. This is very useful to get the hierachical structure of epics with their features and tasks. Is there a search request to get all issues which are recursively connected to an issue (e.g. epic)? With "subtask of: isse" one will get all children of the issue, but their children-children are missing. Maybe, there is a complete different way to get that complete structure of an epic?!?