*The issues relating to Bizjets might just save our bacon (by virtue of the people they upset) but are not relevant to a forum such as this so I avoided them in this discussion. *
Yet this is why these debates pointlessly go round and round in circles - because nobody takes in the whole picture. The N-reg Arrows, Senecas, Aztecs, TB20s, SR22s, etc, plus various assorted helicopters, in the UK make up a tiny (and politically insignificant) part of the picture.
Which is NOT to say that the "little people" cannot make a useful and effective representation to the DfT. They can and should.
*The issues relating to the acceptability or otherwise of the FAA IR for flight inside controlled airspace in a G-reg are what really make the difference. *
If an FAA PPL/IR could fly IFR anywhere in Europe, in a G, in any airspace where IFR is allowed, that would be brilliant. But is there any prospect whatsoever of this happening? The flight training business (European protectionism) will make sure it doesn't - even if it doesn't do them any good.
*For a lesser number of souls, it relates to Regulatory Stability (conspicuous by its absence under JAR/EASA), and for others it relates to the desire to use the latest STCs.*
If you count a whole aircraft that is not certified in Europe as "a latest STC" then yes

Not a lot of people will go N just to fit some piece of kit.
*Voyages of mental masturbation relating to the nature of democracy and fairness are all very well, but won't achieve anything, I fear.*
I agree.