I think more likely there will be "tiers" of translators, with highest accuracy going first to languages with accessible and common Rosetta Stone-style word-for

I think more likely there will be "tiers" of translators, with highest accuracy going first to languages with accessible and common Rosetta Stone-style word-for-word translations. Think French to German. Or Polish to Russian. Or English to everything else. Langagues without vast translated data sets will probably be stitched together by various translations of multiple degrees. If you want to translate Farsi to Creole, for example, you probably won't find many direct translations to start with, but you'll probably have a better chance getting "mostly" there by going through a "hub" language like French or English.