I do run firstname@lastname.org I would love to be able to use that with Mastodon as my one and only identity, regardless of which server I happened to be log

I do run firstname@lastname.org I would love to be able to use that with Mastodon as my one and only identity, regardless of which server I happened to be logging into. I like the idea of different servers as being Special Interest Groups. I use lists a lot on Twitter. But people who I put on a Mac list also talk about baseball, the war in Ukraine, etc. Google+ wanted to have each person separate out their posts by topic and that isn't the way most people seem to want to operate. For selling something, like Craigslist, OK, I'll put it in a specific category. But just things I want to write about? Unless there's a House of Dragons server, a Houston Astros server, a Rust server, etc. it's not going to happen.