Probably will be mostly us 3!
I try to only comment on resorts I've skiied, and will always mention if what I'm posting is hearsay.
The BC in Japan is so good that I highly recommend it to novices looking for a different experience, and if you get the bug you'll thank me later. It's very different to USA/Canada/others spring skiing. You generally end up with fields of untouched deep powder with not tonnes of effort.
Regardless:
Cortina thoughts.
It's set up so that most people funnel back to the middle, making it feel crowded until you get out to the sides. Lifts can close to the summit relatively easily due to snow load AND wind load issues. It gets hit very hard on powder days and isn't too much fun after as it's mogul-y and skiied out. They tend to open it in stages it seems, so the middle opens then the rest, but maybe those were just the cloudy days I rode or something. Didn't go to Norikura, from the map it looks quite small.