In my opinion, the single biggest and most important change to how moderation works on this site would be to ensure that the moderators are able to speak to each other in private. At the moment, it's so many free agents operating without that communication, and while it's mostly coherent, you can get these anomalies whereby one mod, or even multiple mods, tacitly approve some post or comment, but another mod does not. Neither opinion is necessarily wrong, but when there's no communication there's no consistency.
At the moment, Mods don't even know a complete list of who the other Mods are. It's possible for a Mod to infer some of their fellow Mods, but that still doesn't lead to direct communication. Instead, Mods are reliant on communications from the Editors, but then are free to interpret -- but not discuss amongst themselves -- those comments.
I don't particularly see a benefit in knowing explicitly who the Mods are, nor even in knowing which Mod made which decision -- all this seems to achieve, if there's some distrust in the system, is make it easier to know whom to target. Better instead to establish beyond doubt that there's a consistent and collective policy to which all Mods are working in unison. At that point it would barely matter who the individual Mods are, as they are all equally to blame, or not, for decisions.
I'm not saying this is a binary choice, but certainly if all Mods were identified but *still* weren't able to come to collective decisions behind the scenes, then the heart of the (perceived) problem seems to me to be still there. I've suggested this multiple times, but so far nothing has come of it.
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Still, I say "perceived", because a lot of this also seems to come down to people on this site being unable or unwilling to take responsibility for themselves, or assuming that they have an inhuman ability to make wholly objective judgements about what constitutes rule-breaking on AB (or anywhere else for that matter). A bit more self-moderation wouldn't go amiss in this regard.
For example, with Law in general, it's pretty standard across the internet that answers to a technical question should be (a) accurate, or at least coming from a position of being well-informed, and (b) useful; anything that misses both of these becomes a distraction or a confusion. In places which less strict moderation, you'll usually instead find answers that miss these criteria "downvoted to hell", as would happen on reddit. As they should be -- but then that means it's important for us to have the discipline to tell when a question invites a general discussion, and when it demands a technical answer that we should not be ashamed to admit is beyond our ability. I'm making here no judgement on any explicit example -- although, that said, I can't personally see what explicit legal question is being asked in the thread Khandro mentioned earlier that pushed it into the technical rather than the discursive -- but I *do* want to emphasise that it is completely logical for explicit technical questions to be limited to explicit technical answers, and for anything that doesn't address the question to be regarded as a distraction. This site is "Answer"bank, after all, so at least sometimes our comments should answer the question.
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But, anyway. I dearly wish AB Mods were able to speak to and co-ordinate with each other, in a way that simply doesn't happen right now. The perception of arbitrary exercise of power would perhaps not diminish -- some people just have this too fixated for any given action to shake it -- but it would at least make for a more demonstrably coherent approach to modding.