Let me start off by saying I do like the game and I largely have the Quick Look and TotalBiscuit to thank for that. They made me manage my expectations before I got the game.
That said, even with my expectation significantly downgraded to what they showed before, I still am a little disappointed. For starters, there is almost no real hacking that you're doing. Next, the hacking that you can do is extremely simplistic and often not required. Not to mention, nothing about it is new. Almost everything you've seen done in games before. The camera hacking that allows you to hack another camera and move through several until you can hack the spot you're supposed to hack; I've seen that in a bunch of games. I believe the last I played that had it was Arkham Origins.
Lastly, they go for such a serious tone with a focus on hacking which implies that you need to use that stuff to get by. Meanwhile, I'm playing on Hard and I can just shoot my way out of everything. You're carrying like 20 guns in your trench coat. Going about sneaking is often more hassle that takes more time than just gunning everyone down.
I still enjoy playing the game though. I'm trying to 'role-play' it a bit. Pretending like I'm not a one-man army that can blast his way through anything. Pretending like I need to use the hacking skills. It's a fun game to play it like that. Still, when I look back at what they showed it looked so much better and so much more interesting than what it actually turned out to be.