Pleexy should be able to search for sub-tasks assigned to users even if the master task is assigned to someone else.
Now Pleexy only finds subtasks if the whole hierarchy is assigned to the user.
Due to limitations of Asana API we may have to limit connections to sync YOUR tasks ONLY, vs "Assigned to Anyone", as we allow today.
Please let us know if that breaks your workflow, we would love to hear about your use-case.