#askNostr,
As we should all know, it's pretty trivial for a Nostr user to change their profile name and picture. I think this is a good thing (maybe couldn't stop it even if we wanted to). However, it seems like this ability could be gamed to help facilitate impersonators in a way that could evade most detection: e.g. if an nPub I'm already following decided to impersonate another nPub I'm already following, I don't think I would notice.
Obviously, this would require a much longer game by a would-be impersonator than the issue nostr:npub1jlrs53pkdfjnts29kveljul2sm0actt6n8dxrrzqcersttvcuv3qdjynqn is addressing in his note I've quoted here; but, the solution to this long-game impersonator might be pretty simple: Nicknames (a la, what the Signal app uses). If every entry in your follow list also had a 'Nickname' field, it could easily be used to always display the nPubs name that was used at the time you chose to follow that nPub; or even whatever Nickname you chose to assign to that nPub. Maybe clients could allow you to toggle between displaying the nPub's chosen name, or whatever nickname you've chosen for the nPub, or perhaps both simultaneously.
At this point, I'm just rambling; and this doesn't currently seem to be a big issue; but whenever I notice someone who I follow has changed their profile name otherwise unannounced, something in the back of my mind is tells me this presents a potential danger that could be hard to detect.