The Tridentine rubrics cannot be observed in most of them.
Cannot they be renovated?
I must admit, this seems at odds with the fairly recent guidelines we saw about chapels and tabernacles.
Nevertheless, changes could be made, if necessary.
They've already BEEN renovated.
Wasn't INSIDE THE VATICAN one of the places that was jumping up and down about a reconciliation with the SSPX that, subsequently, proved to be false?
Let's wait and see what happens.
Even if priests are allowed a universal mandate, I suspect very few will exercise it, and even then some will do it as a novelty.