d.n.s - try Quasi-D
"Meester Fawlty, ees not rat...eet ees hamster!"
Or to put it another way - when a preferred airspace model meets practical realities there are certain adjustments required in order to facilitate "going forward".
Let me get my crystal ball out here - within 12 months of Broome/Karratha Towers being commissioned Alice will also go "modified-E-over-D".