AutoFill and the Safari Extension

Dave, thanks for your response, and my apologies for being so slow to get back to this. Here are some of the issues I have with the browser extension:

1) The 1Password extension will get in the way in fields where it's not needed.
2) The 1Password extension can be unresponsive in fields where it is needed.
3) The 1Password extension makes it harder to use "Hide My Email", which would ideally be provided by Safari native autofill.
4) An extension that injects Javascript into every web page I visit violates the principle of least privilege, and for no good reason that I can see. This is puzzling, coming from a company that's focused on security.

I haven't tried Universal Autofill and am reluctant to do so, primarily because it takes #4 to another level.