dcf0706f_Mass__Traditional__Tridentine___Things_to_think_about
Study and Experimentation before making adaptations: Under the ...ecclesiastical authority ... promote studies and necessary experiments whenever there is question of adaptations to be proposed to the Apostolic See. (Sacrosanctum Concilium 48) [Things to think about] 
The document promotes studies and experimentation before proposing regional adaptations to the Vatican. Keep the essence allow for renewal of the form. Anything that distracts from the celebration of the Eucharist should be discarded. "the [Bishop's] commission is to regulate pastoral-liturgical action throughout the territory" under approval from Rome.
Ordinary Form of the Mass (Novus Ordo, New) compared to the Extraordinary Form of the Mass (Traditional, Tridentine)
Things to think about