Since the NO did transfer Ascension Thursday to "Sunday", I have no doubt they would not hesitate to pick a fixed date for Easter. I just wonder what R&R groups will do, will they go along or will this prevent them from rejoining the NO? I suppose only time will tell.
Well, it's a good question, I suppose, since a lot of trads use the updated 1962 missal and others accept the first wave of changes (initiated by Annibale Bugnini) that happened before Pius XII died, and still others say that the first version of the Novus Ordo in Latin, 1970, is okay since it had only one Eucharistic Prayer (instead of 4).
I think the Novus Ordo had even more than 4 Eucharistic prayers.
You may be right -- there may be more than 4 now. But after it first got going, for some 30 years there were just 4 options for the so-called Canon of Newmass, Eucharistic Prayers I, II, III and IV. (They even used Roman Numerals to make it look more credible!)