1PW8 - Missing Category view in left bar

ability to keep the Category selection when navigating between vaults
That's the biggest point for me - I usually only want to see logins unless I am explicitly hunting for something else. But it's just easier because you can see all of your categories at once without having to do another UI interaction to find them.

This is a bit of a pattern with 1Password 8 in general for me - lots of things take an extra interaction or two over 7.

Tags are basically useless to me because they're a manual thing I have to set on my items - and I have hundreds of items in 1Password. Categories are a reasonable starting point that sorts data for based on what item type it already is - instead of requiring me to move it around manually.

edit: at a minimum, I would make it so that the current drop down remembers the last value you set for each vault. but that's still not great compared to the previous UI, in my opinion.