#1) Everyone knows that Henry was a hippo, not a pig.

#2) In a magical world of time-travel, alternate realities, Gods and so-forth; the only argument for or against being able to change race is that the balance is completely wrong now, and everyone that's not a Galka feels cheated.

When I gear up my SMN and stand next to a Galka SMN, only to see that he has 100 MP less than me, but 500 HP more, it's clear to see the imbalance. The minuscule amount of extra MP gained by other jobs does nothing to compensate the massive extra HP gained by a Galka.

Having the best WHM in the world means nothing if you don't have enough HP to avoid getting 1-shotted. Therefore, Galka > all. And we'd all like to join the elite club, tyvm.