No thanks. For the record, all jobs have silly cross-class abilities from their subjobs.

See for example the attack abilities you can take in between certain DoW classes that have no special effect uncomboed, like when cross-classing between GLD and MRD, what was it, Savage Blade and Skull Sunder? Useless.

Cure on PLD or Physick on BLM/SMN is in 99.9% of the cases in duties utterly useles, its potency is ridiculously low given those jobs' Mind stats, so much so that most enemies and bosses deal more damage than you can heal through if you do nothing but spam these spells non-stop. A lower-potency, instant-cast Physick would be even more useless for BLM/SMN than it is already, as being tied to the GCD even as instant-cast, it would be too weak to be of any tangible use. It's currently mostly only good for open world content and caster dps who are flying solo.

@anybody who thinks Blizzard II or Surecast are useless: lol.