Higher reward.
The amount of time spent doing the Tribunal is not worth it when you could get the same amount of IP much faster just playing Coopai. I understand that people should be doing it to better the community, but honestly, nobody is going to want to do it for a long period of time without a good reward. If you keep on shortchanging the people who care, they're going to stop caring. You will scare them away, and bring in fresh meat. They will then get bored, leave, and then more fresh meat. And the only reason the fresh meat is coming in, is because they have a power complex, or are angry, and want to punish people for whatever reason.
Possible solutions?
Ranking. Based on Accuracy and Quantity, with one giving lee-way to the other.
Basically, if you have a 10% Correct:Wrong judgement ratio, then you'll be in Bracket 1, and get 10 IP per correct.
Bracket 2 - 20 IP - 15% C:W
Bracket 3 - 40 IP - 20% C:W
Bracket 4 - 60 IP - 30% C:W - Minimum of 100 Judgments.
Bracket 5 - 100 IP Correct | 10 IP Wrong - 70% C:W - Minimum of 200 Judgments - 140 of those have to be correct.
Once you reach a bracket, you can't be knocked down, especially the highest bracket. Clearly, you're doing something right if you're getting more than half of them correct. Right?
Or
Successive Reward. Snowball effect- with some safeguards from a "JUST CLICK PUNISH" mindset.
Basically, the more that you get right, in a row, the more IP you will get from each one thereafter. It's not like someone will randomly get every single one right, and if they do, then they have to be at least reading one or two games of the many the person was reported for, right?
First: 10
Second: 15 (+5)
Third: 25 (+10)
Fourth: 40 (+15)
Fifth: 60 (+20)
Sixth: 85 (+25)
Seventh: 115 (+30)
Eighth: 150 (+35)
Ninth: 200 (+50), and each correct thereafter will be 200.
Yes, 200 IP for a correct is a lot. But at that point, the Tribunal member is either extremely lucky, or they can skip law school.
Just my two cents.