Be interesting to see if the lack of wind tunnel testing hampers red bull (if it's observed / enforced). Also depends if the rest of the field catch up. Ironically, finishing 2nd probably wasn't ideal for merc as they'll get less wind tunnel time with a (re)design that is still fairly new to them. Obviously red bull are at a distinct advantage, but the aero time is designed to level the playing field somewhat. But you're also right that Newey is the secret weapon that the other teams have no answer to.