Sounds like a good idea on paper, but IMO the idea might be hard to implement just so that a couple users could embed a tweet (not that it would be used often, to be completely honest). The only way I can think of is making a tag like [tweet="1jh4j1kj098t90892"] (the random assortment of numbers and letters in the link of a tweet), or maybe making it so that someone could use HTML to format a post; but that would have security issues.
If you ask me this is a good idea. However I have nothing I should say regarding this.
If you don't have anything to say then there's no reason for you to say anything.