If the government would do something about this to improve the situation of the site, it will definitely be a great boost to your economy.
For sure, for parking fee if they charge 5000 IDR / motorcycle, on weekend they can get 5,000,000 IDR or $344. There are more than 1000 thousands visitors every weekend with this condition. The food stalls also get a lot of benefit for local sellers to earn profit from the visitors.
Yes! That's an amazing idea!