Other than sparing Deckard at the end of the film he didn't really do anything else that would be called noble or good.



I suppose if you wanted to offer a defence he had gone to Tyrell looking for forgiveness or at very least judgement (along with an extended lifespan), but Tryell just praised him and his past actions, effectively endorsing them. Tyrell basically told Roy to be a killer and that is what he did.