verbose reply 2/ Afficher plus
For some of your grievances, the "ircv3" project is aiming to streamline the UX so it is on par with more modern chat programs --
6. For registration without fiddling with arcane commands and messages
https://github.com/ircv3/ircv3-specifications/pull/276
8,9. For recalling missed chat history without a bouncer:
https://ircv3.net/specs/extensions/batch/chathistory-3.3.html
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10. Agreed, IRC servers exposing user IPs is trash praxis. I know of some that offer cloaks by default, but I have no idea why that isn't the standard everywhere.
11. This one seems like a culture issue that won't be solved by a different choice of communication platform, unfortunately