What % of yearly pay would you forgo for each remote weekday allowed?

None until I am allowed to be fully remote at which point I would be willing to accept like half salary or even less. Working from home a few days a week actually increases my expenses (home office, commuting, office clothing, lunch out, etc.). Being fully remote lets me live near family in flyover country with massively lower cost of living (mainly real estate, also childcare) compared to the main centers of tech employment -- it's worth a LOT.

This is really it. The biggest advantages of being remote are only unlocked with full remote.

Zero.

Been remote for 8+ years in my career, and there's always another 100% remote job to jump to if you search hard enough and don't settle. Luckily, the longest I've been without work is 3 months, during which time I had savings to see me through.

Looking for remote jobs is also a great filter for bad companies - an old-school micromanager-run company would never allow remote work in the first place.

I am remote currently and I think of it the other way around- what percent raise would I need to go back to office full time. And it’s way beyond 100%

Problem is that once you are 100% remote you start to compete with everyone with acceptable english and fast internet connection for the same jobs.

If I need geographic advantage to gain a competitive edge, what am I even doing in that field? I just maximize my employee value and everything has worked out fine so far.

Source: I've been 100% remote for 6 years.

Not really, in my experience most jobs still only hire within one country.