Right, they'd have to wait a few min,
then hit WEP, and then barrel across the apron and taxiways willy-nilly at full throttle till they bounce into the air, totally ignoring the runways.
I only use runways on ADW and during squad nights.
Seriously, why should you use them if you don't have to?
Works even in Clod.
Back to the advantages:
P51 and other B&Z Jocks would love it too:
High alt cruise: almost closed
Dive: close
climb: open
dive: close again
open/close/open...
Makes me wonder how long the potis can endure this.