I'm deciding to post this here instead of the style guide feedback topic since it is only here that the [NA] TLD is mentioned with the implication for it to be used as needed.
After handling an entry that needed TLDs which was submitted as being released in "North America, South America," I knew that [SA] would not be sufficient as that represents Saudi Arabia. However, I've now just realized that [NA] represents Namibia. While there are (as of now, to my knowledge) no items related to Namibia in the database, I suppose that could one day change. Regardless, it seems like poor practice to continue to use [NA] whenever we previously found it ideal. While I don't think there should be some mass effort to convert [NA] entries into whatever countries they actually released in (largely US but sometimes CA and MX), it may be best to use country-specific TLDs going forward.
And for those curious, [EU] does actually represent European Union, so I suppose it's still fine to use unless anyone makes an argument otherwise. It may make sense to retire that TLD too, though.
Thoughts?