Because the vat majority of people in the world cannot speak Latin, nor can they translate it, this almost borders on a canard - that one could go anywhere in the world and attend the Mass in Latin -
If one simply restates the issue - "one can go anywhere in the world and attend the Mass (being said in a language one can neither read nor speak), then the question becomes - is familiarity with the sound of the words critical? And if so, why?
Latin should be retained because it is the official language of the Roman rite. there is neither anything wrong with, nor suspect of, a rite having an official language. The Maronite rite uses Aramaic and Arabic (as well as English, in the US). Other Eastern rites use Slavonic languages.
So having the Mass in Latin to an extent makes the Mass a universal experience if one attends it in a different culture with a different language. But let’s be honest; the vast majority of participants, either in the US, or Chile, or Sri Lanka, or Egypt can neither read nor speak it. So it is not much of a promotion of the EF that one can attend the EF in, say, Sri Lanka and not speak or read Latin; by far greater impact, I would suggest, is the rubrics, not the language. Hearing Latin with a Sri Lanka accent might not be quite the experience of Latin that you promote…