I think the rule should be simply the exact converse of the existing Rationality Quotes rule, so every good quote has a home in exactly one such place.
This would be ideal. I like the notion of having a place for excellent rationalist quotes but like having the "non-echo chamber" rationality quotes page too.
The other rationality quotes thread operates under the rule:
Lately it seems that every MIRI or CFAR employee is excempt from being quoted.
As there are still interesting quotes that happen on LessWrong, Overcoming Bias, HPMoR and MIRI/CFAR employee in general, I think it makes sense to open this thread to provide a place for those quotes.