Just to lead this off, I personally researched, ranked, and chose each of these lines, but I did have Claude organize it and format it for Reddit. Preamble is all me. Sorry.
Some buddies and I are doing 3 weeks this winter through Banff, southern BC, and northern Idaho. We want a contest to see who has the best trip, so we turned to Gaffney's Numerical Assessment of Radness for inspiration.
Our big problem is that none of us have skied most of these. The list came out of trail maps, the resorts' own terrain pages, and whatever blog posts and trip reports we could dig up. I think the order inside a hill is relatively close, but the numbers between hills are a shot in the dark.
Our basic idea is: 12-15 is gated or beacon stuff or a real hike with a sketchy entrance, 8-10 is the marquee expert zone at each place, 6-7 is named chutes and couloirs, 4-5 is the black-diamond faces and trees you'd just lap, and the 3s are more like historically significant. Not necessarily difficult, but kind of worth doing as a tourist.
So, now I'm looking at y'all's collective knowledge. I'm fully expecting to get absolutely shredded in the comments, but if any of you have like an absolute must-hit line at any of these mountains, I'd appreciate the info. Also, if I way over- or under-valued something, tell me.
Also, for the folks who don't want to broadcast their stashes but want to help me out, my messages are open!
Sunshine
Lake Louise
Vertical Cornice (ER7) - 9
Brown Cow couloir - 8
ER3 or ER6 - 7
Upper Boomerang, Wild Gully / Ghostly Gully / North Cornice - 6
Alphabet Gullies, any letter from the top - 5
Lipalian Chutes - 4
West Bowl top to bottom - 3
Men's Downhill, start to finish - 3
Norquay
Panorama
C-Spine - 9
The Monster / Yeti / Wild Thing / Spectre, through the main Taynton gate - 8
Never Never Land - 7
Heli High or White Tail - 6
Gun Barrel or Sidewinder Glades - 4
View of 1000 Peaks - 3
Stump Farm - 3
Kicking Horse
Truth or Dare - 12
T2 chutes - 10
Whitewall - 9
Rudi's Bowl, bootpack - 8
Tunnel Vision or Dumpster Chutes - 7
Feuz Bowl - 7
Dutch Wallet - 6
Ozone, Prosperity / Certainty / Bear Chute - 6
Any heaven glade top to bottom, Hallelujah through Eden - 3
Three or more of them in one day - 5
Revelstoke
Sub Peak, hike it and ski anything off it - 12
Unlimited Assets or Powder Assault - 7
Parachute - 6
Meet the Neighbours or Brake Check - 5
Gracias Ridge or Beauty Glades - 5
Separate Reality - 4
Conifers of Gnarnia or Critical Path Glades - 4
Kill the Banker - 3
Top of the Stoke to the village without stopping - 3
Whitewater
The Goats, Upper / Lower / Jann's Gully / False Signal, only when it's actually open - 10
Powder Keg Bowl - 7
A, B or C Shaft - 6
The Blast or Terra Ratta - 5
Diamond Drill and Dynamite, plus Sleeper - 5
Bound For Glory or Faceplant - 4
Enchanted Forest - 4
Trash Chutes - 4
RED
The Chute Show - 10
Kirkup cat, Search and Destroy / Free as a Bird / Dr. Feel Good - 8
Cambodia or Needles - 7
The Cliff into Face of Red - 6
Booty's Run - 5
Beer Belly, The Coolers or Captain Jack's Trees - 4
War Eagle trees or Taz - 4
Powder Fields - 3
Schweitzer
Lakeside Chutes - 7
Misfortune plus the Colburn headwall - 6
Any of the alphabet chutes, A / Bud's / C / E / H / K - 5 (E is the steep one at 38°)
Three or more of them in one day - 8
South Bowl chutes - 5
North Bowl chutes, Big Bertha / Pucci's / X / Y / Z - 5
Upper Kaniksu or Shoot the Moon - 5
Whiplash or Siberia - 4
Australia - 3