1. Give me the "Dragon Ball Z" superpower skillset, ie flight, ki control and ridiculous fitness. What better motivation to keep myself in shape, if I had abilities like that riding on the line.
2. Also, give me Killgrave's superpower. No, I would do what he did with it. I'm a reporter and it would make my job way easier if people couldn't bullshit me.
3. Let's be a bit less selfish here: I'd wish for the global development of perfect faster-than-light space travel. Get us out into the stars like we should've been trying to do.