I imagine if we can customize our kids to look like what society decided is good looking we will have issues. Not to bash males( being a male) or females but many people have gender stereotypes for what is attractive as you said it is subjective. I worry that what is considered the ideal traits now may change so some of these people might be looked at as oh those are 2070s kids because they have light skin or something. There will also be issues when it comes to people that missed the genetic messing boat I bet people will call them mutts, random chancers. People that do not run quite as fast, look boring, and get sick more. That is my two cents.