Finally, maybe I'm getting paranoid in my old age but it seems all your objections relate back to things I've done.
They're the ones I was involved in. Provolution had a serious problem with the Judicary in a previous game, and I'm not sure but think Tao did too before that. You don't have to listen to their complaints because they walked away instead of taking the abuse.
I also had disagreements with JR rulings in DG7, but the judiciary was ruling in favor of the majority by reading extra things into the law which weren't actually there in the words. A perfect example of how I want the judiciary to work BTW, even when the ruling goes against the position I'm taking. I take issue when the ruling is not what the majority intended when the law was created.
You are most certainly not the only one. I have also referred to incidents with Strider (the time when I wanted to repoll the decision on going straight to democracy vs. taking a side trip to economics so we could get Smith's -- I wanted Smith's and he made a big deal about only polls created by officials could be binding) and Cyc (the time I wanted his city to change its build queue to something we needed for a national project, and he got pig-headed about the governor being supreme ruler of the build queues and nobody gave them any respect).
And I'm not above taking friendly jabs at Chieftess either. Playing the game with untested beta code should result in a forced vacation. She voluntarily decided to step back anyway for fear of contaminating the save, and the actual in-game result wasn't all that bad, so we didn't get the chance to put up the gallows.

And it's not really her fault that there was a 6 month or so period where all her political opponents got foot-in-mouth disease and got themselves banned.

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You should start taking them in context. You talk about checks and balances and not taking extreme positions yet last game we had an unchecked office (the Censor) who unilaterally went around invalidating polls for political reasons. Last game my polls were trounced because I wanted them to be private. Let's not even talk about a CJ who validated his own appointment. Not only were there no checks and balances I couldn't even get a JR or a decent initiative polled to see if private polls were acceptable to a majority of the citizens. Doing a pocket veto (so to speak) of an amendment JR was a response to these things. I would not have minded the majority going against what I wanted as long as the issue got a fair hearing - which never happened in the last game.
Sorry, you had a very simple out and refused to take it. If you had merely made the first poll on whether polls should be allowed to be private a public poll, the rest would have fallen out without a problem. Either the people would have validated that private polls were OK, or they would have confirmed that they wanted them to remain public.
I'm not sure who was on the court for the failed JR (probably me if it's the case you're talking about but not 100% sure), but the approach you took (trying to say initiatives are not "official") was the wrong approach. If you had instead pointed out the "should" didn't say "must", it would have been a ruling of "you're exactly right, they don't need to be public, case closed."
As for Curu's appointment, he was ready to recuse from the case. Pressing too hard, and continuing to press after he said he'd consider it, is what forced him to take the harder line.
I did notice another extreme case, and tried to fix it on both sides of the dispute. Our friend Ravensfire's position that two (or was it three) polls were required to approve a war plan was completely over the top. The SoW's (Robi D's?) insistence that no discussion or approval was required was equally over the top in the opposite direction.