Fist stances don't need to be deleted, they need to be merged.
I am still salty over losing the extra movement speed when we lost GL since we went back to fire stance.

They might as well make them a passive but I don't want to just lose more stuff again.
MNK running faster just makes thematic sense too, I do think it makes sense for NIN as well but considering that we rely the most on positionals and are such physical fighters that are also the fastest it only makes sense that we could run faster.
I know it's not a huge deal but still, you do feel the difference and it doesn't make sense that we lost it.