@vga256 The architecture of the web is what limits it. If you change the domain, what happens to any posts or sites that linked to the original URLs? Those can’t be updated, so they become dead links (unless you set up URL redirects from the old domain). Servers across the Fediverse also cache your posts, and those caches include the URLs to your posts, so they’d either have to be told to update or they become dead links. It’s not an easy problem to solve.