the primer was super great to read!
i'm trying to play the deck even in legacy, i know is not good as it is in vintage, but it still have some potential imho.
btw i think that the deck need just few but powerful wincon, not more than 3 in total. this because u just want draw bunch of cards in order to protect your finishers.
volt+key and tendrils might be the best one: the first one because are both artifacts and can be bounced with PO and the second because once u go off means that u'll have so many spells to cast.