While I do not agree with you 100%, you do make a good point.
There are many older people who do not like Latin. This is largely a spiritual problem - not one of linguistics. I can attend a Byzantine Easter Mass, in a language quite foreign to me, and see the beauty and spirituality of it. Understand what is important in it, as I personally understand what the mass is.
But there are many who do not - either becuase they do not know (the case with the young), or because they have forgotten (the older ones).
I am not totally dismissing your idea, just taking it from a different perspective.
I would predict more of a loss of the older folks then the younger. Youth want to learn and explore. Those who would really want to go to mass, might be curious as to "what this is all about". They would want to see and experience it, as they want to see and experience amy things in life.
But, as in many things, it would be a test of faith. Are you going to mass for personal, feel good, ego renewal? Or for the right reasons: to witness the sacrifice of Calvary reenacted in an unbloody manner.
To participate in the high court ceremonial of heaven, where the perfect sacrifice - the perfect and spotless victim is offered?
As it has been in past ages, it may be again: that many will walk away from Christ because they do not truly know Him.
But Christ never predicted that all would accept and follow him. He offered a narrow gate by which to enter heaven. Not a multiple choice menu.