DC court has already ruled on friend of court in these cases. So has Supreme Court, in a decusion written by Ginsburg. DC court is half pub appointment, and half rat.
Keep in mind that Flynn is an “all hands on deck, eliminate at all costs” type of individual whom the Democrats greatly need suppressed. I’d say he’s the third biggest priority, with keeping the House on the Democrat side at number two, and of course eliminating Orange Man Bad is Job One.