Aren't most meanings gender neutral? David means 'beloved', Timothy means 'honoring God', Felix means 'lucky' etc.
Wolfgang is a very traditional name that is quite dated in Austria at the time. One of my parents is Austrian. It's kind of like naming your daughter Alfred in the US or something like that. But they don't live in Austria so I guess for them it's different.
You are entitled to your opinion, of course, it was just a thought. I actually think Kristen would be good on a boy. The sound just seems to work better on a boy, in my opinion. On the other hand I find Christian to work better on a girl, same with Julian. It's fun to think about which names could work on the other gender :)