From what I can tell you, we will never need less report moderators, because regardless of whether we have such a system or not, there will never be less web reports, as thousands of players report others every day.
As much as I would like to, I am not permitted to provide you with any figures. However, if you have submitted several reports throughout the year, you will have noticed that there are times when it takes approximately three days for your report to be processed, but there are also times when it takes up to three weeks. Unfortunately, even with the system for which you are sharing the idea here, this will not change.
If you would like to know more about how we moderators work, you are welcome to submit a feedback ticket to Game Moderation Management and ask them. There is no guarantee that you will receive more information, but it is worth trying. If you receive more insight from management in this regard, you can develop your idea further and you will realise that the idea, as you want to implement it, will not even come close to achieving your desired result.