I played Hitman Absolution last year, and those open ended levels where you're tasked with assassinating someone and have a dozen ways to do it are fantastic. I really enjoyed those.
My main issue was that you had maybe five of those levels and fifteen linear levels where you had to stealth your way through crowds and guards, dealing with the dodgy disguise system.
Yeah I enjoyed most of my time with Absolution, the voice acting was great and it made some characters far more interesting and some levels were, as you pointed out, really fun to play.
But calling the disguise system dodgy is an understatement. I gave up using the damn thing because later levels are packed with enemies that spot you just as fast as if you were wearing your default suit.
Might as well just go for the extra points.