The authors of these requirements don't seem to know or care that the World-Wide Web was never intended to mandate one visual-only rendering of your content, and in fact doesn't even do that very effectively. Most of them are pretty reasonable semantics (e.g., @user links to their profile) but as soon as you mention "lines" or "icons" or "top right" you're Doing It Wrong, and no affordances using other services is just blatantly anti-competitive.
… not to mention the issue of accessibility. Is Twitter going to block access for visually impaired users by enforcing the new rules?
Tweetie (now Twitter app) at least is a horrible app from an accessibility point of view and could only improve …
I highly doubt Twitter cares about them at all, and they'll most likely have their keys revoked.