dcf0706f_Mass__Traditional__Tridentine___Things_to_think_about
Remove repetition, restore important sections: For this purpose the rites are to be simplified, due care being taken to preserve their substance; elements which, with the passage of time, came to be duplicated, or were added with but little advantage, are now to be discarded; other elements which have suffered injury through accidents of history are now to be restored to the vigor which they had in the days of the holy Fathers, as may seem useful or necessary. (Sacrosanctum Concilium 50) [Things to think about] 
Prayers for the faithful was restored, the blood of Christ now available to the laity. The priest used to make dozens of signs of the cross over the elements. These have been reduced.
Ordinary Form of the Mass (Novus Ordo, New) compared to the Extraordinary Form of the Mass (Traditional, Tridentine)
Things to think about