It’s hard to tell from the diagram exactly how the ramps all hook up. I’m sure it makes perfect sense for your eye since you been looking at it for a long time, so it’s not a criticism just that I can’t quite tell what’s going to happen when the ball gets up there. The only true test as to whether or not it’s fun is to cut it and see how it shoots. And there, fun is subjective what some people like is different than what others like.

As for me I notice a relative lack of closer in high risk shots. If I were playing your game, I would take a strategy of shoot, catch the ball and take the careful aim for the next ramp.

I say cut it, give it a go and iterate. Any project I’ve been in and has taken at least three Whitewoods to get it playing, right