"Pilots will, as usual, request their desired type of approach (ILS, Microwave or the trial 3.2° "RNAV Yankee") on first contact with Heathrow Director."
Please no! Don't start requesting ILS approaches, the first call is already too cumbersome.
With this talk of more drag earlier might one of the objectives of this trial be to reduce noise further out at the expense of more noise complaints closer in?