Update November 2020:
For the last few years I've been on a very comfortable loop of windsurfing back home in Geraldton over summer, then tramping, packrafting and bushwalking in NZ and Australia in the shoulder seasons each side of winter skiing in NZ. I've now added in skiing in Japan as well, so timing myself with a few months back on the waves in WA before heading north for the Japanese winter is the next dilemma. Only this year I'm staying in New Zealand until this coronavirus pandemic gets itself resolved one way or another. Which means lots more tramping and packrafting over the summer.
I decided a while back that I would just take things as they come and not go for a bucket list, but if I live long enough here's some other stuff I'd like to do:
Cradle Mountain Track in Tasmania. I'd actually like to do more than just the five day crossing - there's some wicked walking and scenery in that whole region.
Trekking in Western Sichuan Province, China. There's a rich Tibetan culture alive and well in this region with some great high altitude trekking, glaciers, wilderness... and no tourists.
There's lots of awesome trekking in Europe, the more I research the more I want to spend a few years just doing that. Which is why I got myself a Kiwi passport so I can circumvent those annoying Schengen rules....
See a bit more of Western Australia - I still haven't been to Karijini, Mt Augustus, Kennedy Ranges or Lake Ballard and Goldfields region. All in my backyard (OK a few thousand kms between them but this is Australia!!)
At least six months in India, including some Himalayan trekking. Ladakh seems pretty interesting.
Explore The Phillipines. It's a country that seems to not get its fair share of tourists for some reason. I am reliably informed that the beaches are superb (not that I'm really into beaches...)
Get the hell to South America! Did you know I studied Spanish way back when because I planned to go to South America, and I never did? I'll get there...
Check out Russia and the Stans. Just for the hell of it.
Italy for fucks sake! Yep, guess who studied Italian planning to go cycle touring there? Yep, that'll be me.
France to watch Le Tour. I mean why not? And go hit up all my frenchie friends for free accommodation and good ski times...
Oh that'll do for now, but feel free to offer me more ideas