West Coast:
As far as the poster advocating RNP as a method of increasing an airports level of operations, I don't think the argument works in ASE. Another runway would help, not that there's room or the political will for that. The opposite direction traffic is the limiting factor during busy days as arrivals and departures all come from/depart to the north.
Don't know who that was.
What an RNP AR approach would do for the qualified operator:
1. Provide vertical guidance not only to DA but to the threshold.
2.Provide a 3.4 to 3.5 degree vertical path.
3. Provide lower minimums with the application of a 425 foot per mile missed approach climb gradient.