This discussion -- and the struggle we are having with this very issue in my parish -- is one of many reasons why I wish Rome would formally "recognize" and distinguish two different Catholic rites, such as she recognizes now other different Catholic rites. Simply calling it the Ordinary (and how) Form and the Extraordinary Form is not distinct enough. A really visionary Pope would write some kind of papal docuмent to be published in parish bulletins, explaining that both communities or movements are in communion with Rome. First, that would actually pave the way for more oversight of the N.O. abuses, by standardizing all of it within the GIRM. (Most N.O. parishes are cavalier about following the basic requirements of the GIRM.) As the See is now the Seat of the N.O. cult, the See could standardize the N.O. within universal norms, including formulaic prayers, rubrics, etc. Of course, that will not happen under the current titular head, since Francis is quite a fan of the casual and the multicultural, pandering to both. So, doubtful it would happen while he's in charge, but it would be a clever way of a subsequent leader to work toward universal (eventually traditional) compliance and universality. Since the traditional Mass is the universal form, permanently, going "through" the N.O. first would be a way to prepare the Church populace for that. Nothing will ever happen while the hierarchy is afraid of its own authority and operates out of Human Respect. We're going to continue to live with disobedience and pride in the ranks until a true, brave General takes over.
Following within this argument, the trads being in the minority and in effective charge of their own "troops" when it comes to liturgical form (not needing standardization from Rome), the same papal docuмent would announce the need to respect the two different rites in total, meaning that overall standards of behavior and other expectations (such as rubrics) are proper to the two distinct rites: a Catholic visiting the other rite should expect to conform to the minimum standards of that rite and would be subject to them. While seeming to validate the N.O. as a legitimate rite, such a clever pope would actually be preparing the Church to reestablish the Traditional Mass as the only recognized valid and licit rite. I think this is actually possible within our lifetimes.
It's not off-topic because such a move would have the sanction of Rome to permit trad groups to enforce standards of dress and behavior for all attending their rites and related events.
Now let's move to the laments in this thread over trad priests not asserting their own authority enough in their own locations and occasions. I do agree; it bothers me, too. Overall, their orientation is to bring souls to, not keep new souls away; thus, their concern is that if they preach persistently about sloppy and immodest dress (men and women), and sloppy behavior (visitors from the N.O. swinging their arms to and from HC, or putting hands in pockets, coming to the HC rail "for a blessing," on and on), such pronouncements will discourage newcomers.
I don't think trad priests are considering the effect of merely one remark from the pulpit at the beginning of every low or high Mass -- a general remark, intended for all to hear. Sentence One: conformity to dress standards are published in the back of the church. Sentence Two: expect that others, with my advance approval, may approach you if you are observed to be inappropriately dressed. This could be the initial, formulaic reminder, just before or just after the announcements are read (for us, those announcements are very brief; they are not everything printed, just what the priest may want to emphasize orally and they take 30-60 seconds to say). Then the priest can go into his homily/sermon.
Where I think our trad priests are very wrong is the degree and permanence of the effect of such speech. It's not going to keep sincere seekers away; it will only keep the disobedient, prideful, obstinate visitors from returning -- people attached to their own will and people not interested in conforming to the demands of those in authority.
Back to my first paragraph: Yes, yes, a pope truly in command would not necessarily consider "paving the way" for the exclusive acceptance of the TLM, but announce himself unapologetically. However, just consider the chaos that an unprepared pronouncement would invite: politically, it would be more problematic, probably, than an interim step would be. I'm not talking, of course, about laypeople, or even about priests, but about the horde of modernist bishops and cardinals. There are certainly other ways of going about the return to universal dominance of the TLM, but something shocking and sudden will be far more difficult to manage, politically and administratively. Clergy on all levels remain irrationally "afraid" of the TLM. That's why you see all these fake hybrids of the N.O. and the TLM in so many parishes:
The N.O. ad orientem
The N.O. with various Latin substitutes peppered within it
The N.O. with communion rails
A weird hybrid of both: Latin Gregorian Propers, chanted, + vernacular Ordinary sung + English recessional hymn
The only reason for these tiptoes is fear. So a pragmatic pope will probably consider the fear factor if he wants to move the Church definitively back to Tradition even liturgically, let alone fully -- doctrinally and in spirituality.