Thank you for thinking about the user experience. Recently, I had to forcibly change an email address that I had in my possession for over ten years. The servic

Thank you for thinking about the user experience. Recently, I had to forcibly change an email address that I had in my possession for over ten years. The service was shutting down. It was incredibly annoying to change this value for some of the sites I had accounts with. Some of them assumed I had access to my old email! Suggestion: So, I would prefer you build into your design the concept of an "identity". The identity is me! I can paste (I use keepass) in an email or my username. Your software can figure out which one I'm using. Also, please allow me to use long passwords, and don't disable paste with JavaScript! Also, allow the email to mostly be a hidden key. I only want to use it to interact with you, not something revealed to the public at large.