I wasn't really holding my breath on the matter. I proposed the matter to a staff member last week as a tool to help insulate from "toxicity" and their reaction was pretty much the same as the general sentiments of this thread here. But then they suggested adding the topic to the board to see what people thought on the matter anyways for the heck of it.
I'm mostly just following up here.
I think it's a great thing to want to improve morale and reduce some of the toxicity that happens on the site, but I am not sure the way to do that is through a motto, per-se. Because honestly, the rules we have could probably be listed as Chaos' 'core values' already, and some have a difficult time just observing those.
I think the best way to improve the environment is for people to avoid feeding into negativity where they can, and to actively promote the kind of writing space they want to see and to remember to go out and experience the world/life when the line between ooc feelings and ic interactions, starts to blur. Also, if someone repeatedly makes themselves difficult or unpleasant to write with, people tend to disengage from them naturally - or at least they should. At that point, it's on the individual to either reflect and adjust, or continue as they are. If they don't change/can't manage it, then they might find themselves without a lot of viable writing partners and leave on their own.