Unfortunately, the Chunin Exam is and always will only allow 2-3 ninjas to pass each time, and with the amount of people joining each time being around 50, and the objective of the tests to filter out around 96% of ninjas. it is impossible to please people or prevent the salt.
That being said, when the Chunins is run as a monthly event, 2-3 ninjas will make around 30 Chunins in a year per village.
I was also very disappointed that Stage 3 had to be cancelled. Somebody on the team had edited the puzzle item to be non-tradeable before I could notice after intensive testing. That stage was actually the one I had spent the most time working on.