Watching "The Wonder Years" with the benefit of age/accumulated wisdom and being able to watch them in order, there are some things that are obvious:
1) Winnie gets around. People probably talk about her, and for good reason. She probably likes being talked about - look at the clothes she wears. She craves attention.
2) Becky Slater should have plaid a much bigger role in the show. She wears a lot of plaid, too, which I like.
3) Seeing the way Kevin acts, he is probably a prime candidate for anger management or some type of early intervention domestic violence program. He's impulsive, short tempered and will do things "to get a reaction." Following his girl issues, he would probably be someone who is at risk of joining a gang or a more formal association of outcasts - adopting "extreme" clothing and haircuts. I would expect he'd be someone who has issues with alcoholism, too.