That makes sense, and I think I agree.

Edit: is that not already a feature? Settings>show NSFW> select "never"

I agree with this feature. I'd rather nsfw not come up on /all when I'm browsing at work. But if I go to a nsfw sub I want to see it. That's just my thoughts about it and how I'd like it to work.

I even went as far as having two user accounts with very different names, one registered with lemmynsfw instance and one lemmyworld with the intention that world would have all nsfw off all the time and obviously nsfw always on.

Within the connect app the nsfw setting is blanket and can't differentiate between settings when on different accounts/instances. It would be great if that was possible.