I suspect the majority of the problem is that we are sick of being told 'it's the US model"; it's proven...
Whilst certain elements are the US model; there are significant differences; which are ignored on the basis that 'it's the US model'; it's proven...
I wouldn't mind getting the US model; but don't tell me there are no differences.
1) IFR Pick-up, is a VFR procedure to get an IFR clearance; here it's an IFR procedure to proceed VFR...
2) G Airspace is effectively non existant; where it does exist, it in areas where it is unusable by IFR; LSALTS above base of E. etc...
3) No E space above FL180...
4) Radar coverage is significant and covers most E airspace totally.
5) CTA is designed to keep IFR operations inside CTA; E to 1200AGL or 700 AGL.
These are all important and significant differences; which have ramifications on both Pilot and Controller workloads; 'see and avoid' is becoming the primary means of 'self separation'; fair enough with slow moving VFR traffic, but totally unacceptable for Jet, turbo-prop operations.
Also, any truth to the rumour than 6 weeks ago a turbo-prop hit a VFR on top in the US? 19 dead...?
Bottle of Rum