I do not suggest that the calendar conform to the lectionary; no, the order of the calendar seems much more important than the order of the lectionary. I do not know how the lectionary is organized, but perhaps there should be three sections of the lectionary: one set of readings for each day of the Temporale, one set of readings for days of the Sanctorale, and readings for Masses that have no assigned proper readings but which thematically align with the Mass being celebrated, ie a lectionary commons. So you would have “Mass of St. ___, Martyr” in the Missal, but this martyr does not have his own proper readings in the Sanctorale section of the lectionary so you have a note in the Missal which says, for the readings, “Use readings No. 27” in the lectionary, which have to do with martyrs. Or something like that. That way, if Saint ___ is moved in the calendar from April 17 to November 8 (hypothetically), a new edition of the lectionary, not to mention the Missal, would not be necessary, and changes in the order could be simply done on an occasional ad-hoc update basis. But if a new Mass is created which warrants creation of its own proper readings, durable inserts can be made until an update to the lectionary is done; this would likely not be very common and would be limited to truly extraordinary occasions, however