Subaru did gain dragon blood and greed's power (if he absorbed them like sloth), so there was progress or at least a change in his capabilities.

The rest of the season was just developing already existing characters, like Reinhard's family, dog boy, and the other faction members.

The fights were horrible, with only Subaru's fight making any sense, and the enemies just decided to bail for reasons despite having lost their strongest member, Greed. Lust may be immortal, but Reinhard can just dump her in space. He just dented the moon, after all.

All in all, I've found the story boring ever since he stopped dying.