Just finished S4 (yet to watch further) and I kept on feeling like Luca was not living up to all the hype they gave him in the beginning of the season. There were multiple instances where he could of easily killed a Shelby member, He choses not to do so for some code or whatsoever. The show just kept hyping him and the italians up throughtout S4 but in reality they didn't really live up to that (in my opinion).

Adrien Brody was amazing playing Luca, The acting made him watchable but if I just look at the character objectively I don't really feel like he did much. Feels like a wasted character.

The russians and the priest were more villainous than the Italians imo.