When I noticed that Young Link's in the new DLC pack, I was sold. I even called it from the beginning because he felt more like a logical inclusion. As a huge fan of the kid Links (no, I don't just like the Toon Links), I was very happy about this. :3
As for Tingle, I hate that's he in it now...
I keeping thinking the best choices for playable characters are Young Link (since Toon Link won't make it in obviously) and Kafei. I think these choices make some sense, but these are what I'm speculating will appear.