Although, I did just recently catch Hunger Games (way behind the power curve I am!), I did find Jennifer Lawrence kinda compelling. Can't really include her in this thread - just sorta spitballing.
I just watched Hunger Games for the first time, tonight. I can understand why you're meh about Lawrence. Formula movie, mediocre writing, not a lot to work with. Give her a bone with some meat on it and she'll have a good chew. I'm tempted to spend the $4 on Amazon instant video to watch Winter's Bone again.