@protoaddict What about Chalice of the Void? Or would all decks run Lurrus + Chalice and hope to be on the play?
Unrestricted COTV has very little effect on if Lurrus is played or not, so much as it just affects what shells he would go in. There is no tension between running Lurris or COTV because you don't have to pick one, Lurrus does not prevent you from running any number of them. More COTV may prevent the PO shell from rising to the top (or strengthen it, who knows) but some other deck that could just run Lurris and not rely on recurring 0 drops would take its place.
With Mentor and Narset, you actually need to make a choice as to which you want, because you literally cannot have them and the cat as Lurrus' deck building restriction kicks in.