I think it would be helpful for future reference. When things "get back to normal", it would be helpful for pedes to know what certain businesses stand for if they move to a new area or are in an unfamiliar place. I think three options like "mask required", "mask optional", and "anti-mask" would work. It could also be used by liberals to harass freedom-loving businesses so there's something to think about too. I would definitely be interested, but I know it would be quite an undertaking.

Edit:

"Mask policy but not enforced" could also be an option

I think it would be helpful for future reference. When things "get back to normal", it would be helpful for pedes to know what certain businesses stand for if they move to a new area or are in an unfamiliar place. I think three options like "mask required", "mask optional", and "anti-mask" would work. It could also be used by liberals to harass freedom-loving businesses so there's something to think about too. I would definitely be interested, but I know it would be quite an undertaking.