Quoted from Rizmo:I think a Mario pin would sell very well
I am in my 30's, I have no desire for a Harry Potter pinball. I would rather have a BTTF pinball hands down.
I agree with others that said you are likely a minority in regard to Harry Potter. Plus, I'm thinking not a lot of 30 year olds are buying NIB machines anyway. This theme would also have most people's kids be excited.