yes, i've heard you people keep mentioning it.
I've also started playing in season 3 (year 2013) and there was never online after I started.
Do you know why it was taken out?
Because the "players" can have ulterior motives and usually they don't.
Take a look anywhere in the world.
You will find people being PAID to do things, in order to keep a more objective stance on the things they are doing.
That's what's wrong with the 'tribunal' system. You would 'use' players that have no reason or motivation help you and maintain integrity.
It would cause more harm than good. That's why it got taken out.
No society and no environment was build up where people could make highly impactful decisions without being responsible for them.
Yes, the system wouldn't be and was't perfect. The reason it got taken out is due to it being so imperfect, it started to fail at doing its job.
Likewise, you can take a look at PBE. Do bugs often get out of PBE to the live servers?
Do badly balanced heroes often get out of PBE to the live servers?
You can make use of your playerbase (random people) to a degree for certain things. But, judgement is not one of them.
If we all were so nice and saints and good people. We wouldn't have "the most toxic moba community on the internet" stamp on us, would we?
The same people that intentionally feed or troll your games are going to handle reports.
The same people that flame and afk are going to handle the reports in the tribunal system.
Those are the people that play this game, it was one of the good decisions rito made, to take the tribunal off.
Ofc, there's also nice people in this game. But they are in the minority.
If they weren't in the minority, you wouldn't have that big issues finding support players that you have to come up with 'autofill'. Heck, you could've just let the old system were everyone calls their role in camp select and have it be a positive experience.
But lets be real for once, that's not how it was and not how it is.