Hi RD
Interesting idea regrading the Dash 8! Aren't you 146 chaps airframe limited to 250Kts below FL80?
It probably is fair to say that many of the TMA controllers do feel harrassed and probably they sometimes just have to do what works rather than the ideal. Seriously, why not come and have a look around; I am sure you would find it very interesting and your company is bound to give you time in lieu and expenses