Mini-game 3 hours

I got 7th place in Racer V2 this time. Since the mini-game events have been fixed at 3 hours since Bowling on September 10th, many people in the Australian community were discussing it and felt the cost-effectiveness has significantly decreased. Comparing the prize pools from the beginning of this month's Racer event to this current one, the total amount has increased by 10,000, but with an extra hour and only a 10,000 increase, it's quite a small amount... What do you all think? Is it too long? Or just right? Let me know your opinions!