Scooby Doo seems to be very popular as a cartoon pinny. The toys n artwork could be amazing, but would enough pinheads buy it ?

Done properly by the right designer, I would move hell and highwater to try to buy one.  Scooby is one of the few themes that literally spans generations.  There is still heaps of Scooby toys, DVDs, figures available in the shops, whereas most of the other titles mentioned in this thread live on only in our memories.   Scooby cartoons are still being made as well, e.g. movie length cartoon - Scooby Doo & The Blue Falcon was made in 2012.

Alot of people are crying out for a spooky type theme, Scooby fits the bill as well.