Looking it up, the Freedom Ring issue seems to be that Quesada leapt on it as a source of potentially good press, then wound up with egg on his face when Kirkman killed the character. There's a bit from Kirkman on the topic on Freedom Ring's Wikipedia page.
The Dark Reign: Young Avengers miniseries is rated "T+"; I'm looking at it right now. Given the high violence level and some of the language inside, I'd call it an apt rating.