YouTube and CC: a baby step in the right direction

I wanted this feature forever, since I started uploaded stuff on YouTube, the ability to license them under CreativeCommons terms and today it was at last added. Have I already relicnesed my videos? Not yet... why? for the same reason I call it a "baby step", only CC-BY can be used, CC-BY-SA is not available. Still, I have hope for it, looking at the comments on the announcement, most people ask for two things: mass re-license and CC-BY-SA, pretty much what I expect too before taking this step. I asked for the feature too, I invite my readers to do the same.