I never played previous Hitman but I agree. Sometimes, i just wanna kill people rather than having to sneak by.
That tactic is still present in Absolution but sometimes it really feels like that is the only way that is to run and gun through the level since the few checkpoints sometimes can ruin a whole long section of sneaking and hiding which has to be done over again if you can't hide and wait it out. Sometimes even the enemies just stay at your hiding place after the whole alarm and you are stuck to either keep hiding or climb out and be discovered again. Overall, some patches are needed for this game.