So I always get a little annoyed when people post a game, but no screenshots. I always think it's extremely lazy, and would like there to be a rule that you must have at least 2 screenshots. I think this will make things better for everyone, as it will generate more interest in your game, and help others figure out if they wanna put in the effort to try it.

I totally agree with you, but I don't think this is a reasonable requirement - we want people to be able to post their game whenever and however they want. What might be interesting to make an extra requirement for featured games - screenshots.