Nostr has over 10 different "short note" kinds and chat kinds today.
And we will have 100s once Nostr becomes big enough.
It will be impossible to render them all just to offer visibility to other clients.
I literally keep saying every other note that obviously is not the idea that clients will render all kinds, and even the idea of embedding opengraph data for rich previews as part of NIP-31 is nostr:nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq3qamnwvaz7tmwdaehgu3wd4hk6tcqyprqcf0xst760qet2tglytfay2e3wmvh9asdehpjztkceyh0s5r9cpvx58v (iirc)
Discussion
By now you must know that that's not what I'm suggesting.