You can get your boarding pass on your phone, and in any case they already have all the data so when you show your ID, you’re in (if everything lines up). This should make things easier.
I am always opposed to having a federal ID; it’s a step in the wrong direction (and the end of the journey isn’t pleasant).
Saw this type of system being tested in Seattle (IIRC) last month while flying. Seemed to work well but it was a little unnerving. It did seem to speed that part of the process up but then back to the usual conveyor belt/coat off, pockets empty routine. I have mixed feelings, but then no one asked me . . .