Hey! French and English person here!
I spend a lot of time sending a message in the wrong language because it's not easy to switch, and I love to switch to get in the most interesting conversations.
But there is no easy way to switch from EN to FR, you can use the command, but it's a long command, or you can go to the settings and forget half the time to click save.
My suggestion is to separate the Global into global languages type like Trade and Combat.
It will allow us to make custom chat tabs with certain languages and make it so if we click on a chat tab with a single global chat language configured, it switches our chat mode to "Global <Language>".
No more errors! No more struggle when switching languages.