Twitter has been working on an Edit button since last year
twitter.com
twitter.com
Mastodon has this right: it's "Delete & Redraft". Start over. You don't get to keep your timestamp. When you say something is as important as what you say. Letting this blur together, destroying Twitter as a part of the record would be an incalculable loss to the platform. Yet it's something that countless users all want and demand. Technically fairly uninteresting: but this is a very hard product trade off to make.
I could swear we heard something about editing or edit buttons since 2009-2011 and it was always just 6-12 months away. If someone working in design at twitter reads this: Wtf is your startpage about either it’s a 5 year old picture with login or a searchbar that doesn’t really work when not logged in. Does it really perform better than showing trending tweets or something useful for new users?