Sure, but I'd never compose in client.

I'd like to have a much more complete ecosystem where you compose a note before transmitting it to multiple relays for viewing on various clients from desktop websites to posting a link on Twitter clones to even generating the web page itself all signed by your key pair with no friction. 

Unlike now where if you have a substack you have to post a link or copy and mess with formatting.

Plus I've still yet to see a good alternative to a patreon-style subscription service.