Behold, the days of half-baked subdivision morphs are over, as demonstrated here by my lovely assistant (who assures me she is not even a little bit baked, like definitely less than a third baked).

From left to right: subd-0 unmorphed for reference, morph (at full strength) at subd-0, subd-1, subd-2.

This took a generous 94 seconds on my machine for wrangling roughly 600k vertices. So for my next trick, I'll be savagely hacking away at that number.

-- I'm not mad at you, just Westphalian.