That's roughly equivalent to a couple of quarters of profit for them, so it's not trivial. It'll be felt in the bonus packets. But will it stop them from doing it again? No. Will their future activities get more scrutiny? No.
It's pretty disappointing considering that Schneiderman had instigated a separate suit against GS and some of the other banks; this fed-state commission was set up specifically to short-circuit those kinds of actions. So he got coopted and neutered.