Not sure about the other questions but I think the Skyline Gang is aimed at younger people. I'm sure many on here won't agree but with the exception of Butlins nutters older kids aren't generally interested.
Ive seen 10/11 year old kids telling their parents they're off to the arcades cos they dont want to watch the stupid babyish Skyline gang.
As I said a lot of people wont agree cos they love anything Butlins & they know the characters but if you really sit & listen it is incredibly childish.
It's not as bad as things like Bob & Pingu which really are aimed at pre-school kids but Skyline Gang is definitely for primary school kids.