As for the "fun" aspect I feel as though this is a control issue, you feel as though you need to control the looks of your villagers. Then go ahead and control them, I just put out my opinion here.
I don't think that's it, at all. At least, not for me. I think the main point here is that some people cannot get out of the brown-hair rut. I had a terrible time getting blonds in VV3 until I found this, because the hair color scale that leads up to blond is a little misleading.