I was told recently that the approach we have mapped out for Abbotsford (CYXX) that begins at the HE beacon would save us enough money in fuel and time over the course of one year's operation to pay for the whole RNP programme.
RNP is a big deal and it will save us money, getting people to where they want to go in all kinds of weather.
There is a procedure for CYYC and CYEG that involve overflying the airport saving time with no radar vectors. NavCanada likes this procedure as it puts us at a defined place at a defined speed consistently. Easily fitting traffic in and around us as we perform the profile. As for CYVR and CYYZ, they are "lost causes" as far as radar vectors and "controller input" on the approach IMHO...