While Mark may not be at liberty to comment on the difficulty rating of his own design, I'd fully expect Chris Pitt and the others that work at Revomaze to have a pretty good idea how the Orange stacks up against the current designs. It's about time for the "TBD" status to be replaced with a difficulty rating. Is it "To Be Decided" when they're already shipped? Perhaps the difficulty rating will be user based which would be appropriate for a user based design.
Blue, Green, Bronze, Silver, Gold, Purple Opened
Black V1 + V2, Orange, Red, Titanium, Lime Opened
HandMade Prototypes too scary to reassemble
Gold CE set in Clear Sleeves