mj,
I think you misunderstood my point. We know what TPs are capable of (in the hands of the right crew lol) but I find it strange that ATC would instruct you to do 220 to 4 miles... If you volunteer for it, fair enough, or if there's no traffic to get in the way we'll just say no speed restriction, but for the approach controller to give you 220 till 4 or FL70 at 10 miles would seem a bit criminal.
Because if something goes wrong on that approach, the investigation wouldn't be very kind towards that controller!
In Nats we get hammered all the time about the danger of unstable approaches and when and what speeds to restrict, and at what range, ranges from touchdown, level flight before the glide intercept etc etc. but maybe in the wild world of class G all sorts of things happen
