Hello
mj 
Open your mind. You must really believe that these operational issues have absolutely no solution. The US can provide class D airspace (radar and non radar) to 2500ft. Surely we can learn from them and provide it to 4500ft and let Centre 'control' the surrounding airspace.
Open your mind mate, and stop following the blind religion of the Oracle .. or should that be The Oreo
.
If ATS experts (in the literal sense) can prove that it can be done safer, cheaper, and most relevantly, more expeditiously (because that costs the Kero-burners big time), with all the appraopriate factors taken into account such as traffic levels … then go your hardest!
