If you've been paying attention to the tv then you'd see Serra setting out to track down Bennett after finding out he's joined Team Meteor.
Err...they are. Your level cap is 90. Their Pokemon are between 80 and 85.
As for my general views, eh. The Gauntlet is hard, but nothing awful. As with all challenging moments in the game its about picking your tools, determining the most efficient strategy, and then knowing the mechanics, your team, and being able to work out what your opponent's are up to. Radomus and Serra are a joke if Ninetails doesn't get Aurora Veil up. Luna is a pushover regardless of what she does. And since she has her tanky Umbreon that can't really do anything the player really has no excuse for going into the last battle without a team at full strength after the first time you go through the section. I see no reason to make it easier.