My main attachment to Latin is because of the huge patrimony of sacred music in Latin, in particular Gregorian chant of which I’m a big fan. It would be a shame to lose it, and using it outside of the liturgy is not ideal. It would be like using the Bible as a book club reading. It really belongs in the liturgy.
That said, I don’t think it’s practical to be able to use it everywhere other than perhaps the simplest chants of the Ordinary. Pride of place does not mean “in every place, every time”. Monasteries, Rome, and some specialist scholas like the one I belong to, certainly give Gregorian chant “pride of place”. And even with our schola, we have to give out chant in small doses. Even once a month at a parish proved too much, so we once a month at a parish, but a different parish each month. That way parishes hear us maybe once ever 1-2 years, one parish that is keener maybe once every 6 months. We become for them, a special occasion to look forward to. That is what “pride of place” means: special.
Nor do I think widespread use of Latin is realistic in this era, other than a few simple, easy-to-learn Ordinary chants. I do believe, however, that tradition is fluid, and that vernacular plainchant is a most appropriate evolution of a “tradition” that adapts itself to the current reality.
Gregorian chant takes effort and training and very few people seem to be willing to step up to the plate and invest of themselves. As I’ve said before the Vatican does not have a squadron of C-130s flying the skies filled with Gregorian paratroopers ready to drop into your parish and provide you with instant, professional Gregorian chant. So again, I invite those who want more Latin, more chant, to step up to the plate and form or join a schola. It turned out to be one of the most spiritually rewarding things I’ve ever done.