Well we know it's wrong & incomplete in pretty observable ways since gravity isn't part of it (theoretically incomplete) and neutrinos in the model are massless even though we know they have mass (observationally incomplete).
But sure, a replacement model has to account for a lot of observations we know do hold for the SM, but I think it'll be closer to how the heliocentric simplified and improved on the Ptolemaic model by providing a simpler perspective that also simplified the math & got rid of various math constructs as "illusions". Similarly, it took time for the heliocentric model to be developed enough to make predictions of higher accuracy because for a long time the Ptolemaic model had much finer prediction powers because the math & supporting data to tune constants was more mature.
I think the SM of particle physics is more likely to follow that path to fix the known problems than how special relativity degrades to Newtonian equations at non-relativistic speeds.
