Also gonna recommend Votan's Keybinder if you want account wide keybinds. Those two addons together are so good when you have a lot of alts.
There's a very small number of settings I'd want to be different on some characters, but in general I agree. The only ones I can remember are "prevent attacking innocents" and hiding the quest log in the HUD, which I do on my crafter (who never does quests other than daily writs).
I suppose it should be optional, but I agree it would be much better to have the option. The first time I made a character after installing the addon (and I already had pChat and Binder for key bindings) it felt weirdly exciting to be able to just start playing and not have to spends 10+ minutes setting everything up.
Greetings,
This thread has been moved to the Add-Ons & UI Mods section, as it is better suited there.
Thank you for your understanding.
There's an addon called Account Settings, it's a godsend.