I'm not as cynical as many others here, I don't know if it's a hint or a trap so much as she might just be honestly trying to be a good wife. My wife and I ask each other all the time what we can do for each other to be better, and we tell each other, and then we try to do it. That's why our marriage is awesome.

But what I would do in this situation is hand the list back and say, "you know, you're awesome, and I couldn't come up with anything, why don't you pick 10 things and just surprise me." That way she doesn't read too much into anything you say. Then you do the same. There's nothing wrong with trying to be a little better for each other, sometimes we need reminders to always be trying to improve.