A question that I would like to ask is "Are all quality posts meritable?".
Yes they are, If a post deserve to me merited and you have smerits then merits them. If you also come across a post that you believe deserve the be merited and you're out of merits, I'm pretty sure a heads up to a Merit source won't be a bad idea provided it's done genuinely and not some attempt to abuse the system with Alts.