I also would love to see PDX; I would then buy both PDX and YVR. PDX would be the perfect follow-up to YVR. I have FSDT's LAX, LAS, DFW and GVA and they're great!
By now though, I've pretty much given up hope of seeing anything other than the next mega US airport, or another re-do of an already existing airport scenery. That's why I do most of my simming in Europe now; there's a lot of smaller regionals to compliment the megas which makes flying Europe much more enjoyable for me than my own US.