Increasingly, many credit card fields are becoming hard to use with 1Password. There is a trend to make credit card details hard to copy-paste or autofill. Some sites even break credit card numbers into groups of 4. They want to force manual entry.
For such cases, I'd like to be able to highlight one or more fields from a 1Password entry and pin them to some sort of pop-up window that'll hover above all other windows so I can go back to my browser and fill things manually. Now, I'm having to switch back and forth between the browser and 1Password to be able to see, remember and type a few things. Becoming a big bother.