Did the same, a few hours in Absolution but hundreds in Blood Money. The skill ceiling is so high in Blood Money, with the coin throws, non-scripted accidents by pushing NPCs, great for speed runs and signature replays, reflected in the dynamic news paper articles about your hits. And yes, hilarious and very amenable AI, remember in A New Life where you could kill the target by having the FBI run him over with their cars by luring him out of the house just right and still get Silent Assassin. Which is very hard to even contemplate on SA Suit Only.
It used to have quite a community aswell, many years after its release and there was uploaded some crazy videos, especially in the Speed Run SA Suit Only category I remember a guy shooting his target in Dance with the Devil from the bar in one end of the Hell map to the other bar with a silenced pistol, using speed, amazing accuracy and a coin drop to make no one in the completely crowded room notice a thing. Or doing even Requiem Accidents Only.