The one thing you can be sure of with Red Bull is that it never shows its wares until late in pre-season testing, if at all. It always has confidence in the package, but the key is to get the car running reliably, which so far it hasn't been on the first day.
Red Bull has focused on reducing its manufacturing times over the years, so that allows it to print the design drawing at the last possible moment and make it ready to go on the car. That means it's the most up-to-date part possible that is used, whereas some other teams can't do that and the moment the design is printed and ready for the car, it's history.
The Red Bull doesn't have the same wow factor that you get from looking at the Ferrari sidepods/bargeboard area or the depth of the Mercedes design detail.