Just do what they did for Classic transisioning to TBC, have the server progress with the option to clone a character to WotLK. It’s essentially the same as yours but the other way, no need to say why, just look at the number of players and raid participation.
Again you don’t need to use preformatted text, you’re allowed to link to other forum posts but if you insist on using it make sure it’s seperated from other text otherwise it’s just annoying to go to. A slight nitpick but with the way you have it (,I edited it on my end) when double clicking to highlight, it also highlights the top line making the link unusable making you needing to manually highlight.
Just trying to be helpful.
https://us.forums.blizzard.com/en/wow/t/a-better-way-to-do-cataclysm
Classic is whatever Blizzard says Classic is and Cataclysm Classic is indeed Classic. It might not be a classic to some, but it being under the WoW Classic banner is entirely up to Blizzard. Kinda getting tired of saying classic…