Oda continuing to make what are presumably endgame villains actually scary is a REALLY good look. This is definitely one of my favorite pages (left side) in recent memory, so to actually act on that is great:
I do personally hope Saturn is just a straight up menace the entire arc forcing people to run from him. His presence shouldnt be overcome this arc. Plus, he doesnt strike me as a Luffy fight, it doesnt lend well to Luffy fighting style imo (hand to hand combat).