The Importance of Act and Potency

Even if change within the universe is illusory, there are still forms of actualizing potential that exist outside of or insensitive to the passage of time. If we remove that justification by going this Einsteinian four-dimensional block route, well, then we've just lost one of the major justifications for even positing act and potency to begin with at all, ever. That's something that I think Fazer's point here completely misses.