I think you're looking at this wrong. The like button isn't for saving things. It's for liking them. If you want to save a tweet, Twitter has both Bookmarks

I think you're looking at this wrong. The like button isn't for saving things. It's for liking them. If you want to save a tweet, Twitter has both Bookmarks and Stories you can use to file it away. If you're liking tweets to save them for later, you're just using Twitter incorrectly. And a "Disagree" button is just a terrible idea. It immediately invites conflict into every post. Imagine writing a post about your experiences with sexual assault or something and you start getting Disagrees from people... If social media feels like it's limiting your social expression, you might want to step away from social media.