A feature on other sites that I miss here is when you post a link, the preview of the link shows up in the stream as the primary content. Any commentary you add, if long enough, gets folded under the Show More option.
D* instead hides the link preview under the fold and requires a user to expand the Show More to see both the link and the preview of the page.
I feel the other systems have the better system. The link is the main crux of the post. The commentary potentially is better or more impressive, but the link is the context in which the commentary is being made and should be at the forefront of a reader’s mind.