I don't understand? What are these things you have to change? Your second paragraph mentions changing defaults. Of course software evolves over the decades. Yo

I don't understand? What are these things you have to change? Your second paragraph mentions changing defaults. Of course software evolves over the decades. You may not like every change, but evolving along is always an option, of you don't want to tinker. Also, most UI config is stored in dotfiles. Upgrading doesn't apply the new defaults to an existing account.