There is no need to make it a two stroke, but I certainly agree with a kids bike. I don't know who said it earlier on the post, but let KTM make the MX kids bike, and Berg make the Enduro version. Thinking realistically though, a mini (<125cc 4 stroke) would probably require all new tooling. I don't think you could make much of what is currently used to work in a bike that size. If it were 80cc 2stroke size (I would say a medium size bike for the preteens maybe 150-200cc 4 stroke), then that probably could be made to work with most of the existing tooling, just a smaller frame and wheels. (I'm thinking a smaller bore, smaller crank, same everything else in the guts, new cam, frame, DONE!) AND, by doing so, you could get that market share.
It's is becoming a family thing. Ride Red, Dad-400cc, Mom-250cc, Little Earl-50cc. My buddy is about to have his first kid, he can't wait to get him on a bike (he rides Red :? :evil: )