Really nice to see this thread come alive again (I've been secretly hoping for progress). Also grew up with the Dukes and think it's a great theme for a pin. Would love to help any way I can. Even if it's some graphic design (I have experience in photoshop, illustrator) to help with the visualization of your ideas.
Lots of great ideas from everyone in here so far. And, agreed with others, some type of jump, where the ramp would just end and the ball could fly through a barn, bale of hay, whatever. And just like the narrator that chimes in to explain the plot during the TV episodes, his voice can help direct you where to shoot in various modes. Love the previous idea of "stay tuned" after a drain as well.
Hilariously awesome idea for the airhorns (playing Dixie) in the pin. I used to commute 1 hour to Philly, and I was so sick of road jerks that I (illegally) installed air horns in my car (With a hidden switch to select the stock horn). Those horns would scare the crap out of people on the road. I'm just imagining those decibels coming out of a pin cabinet. I think even young healthy players would have a heart attack. You should definitely do air horns, but you might have to muffle them a bit! Seems like a great way to start the game : launch the ball, and the airhorns play Dixie and we hear the boys hooting "yeeee-haww".
There was always a little wooden covered bridge in a lot of the episodes, that might make a nice little feature for the ball to pass through on one of the ramps. It can have a trap door under it where maybe after a sabotage "dynamite" explosion, the bottom would open and divert the ball somewhere else (giving more ball paths for one ramp).
Keep up the great work, always a pleasure to read about your progress!