Surenix (aka Thientam Bach) just announced his new tweak Auki, during a presentation at JailbreakCon. He bills it as all of the above - quite a bit. Benno Krauss was the developer who worked with him to create it.
Auki is essentially a quick reply feature for messaging, as well as an easy way to silence individual conversations or people in messages.
It's available in Cydia now, for $3.99.