I just completed the game last night and after thinking about it for while I'm starting to lean more and more towards the notion that not only does this game try overly hard to be a sequel (well prequel) to Deus Ex, it actually tries to BE Deus Ex.
Its not really so much a sequel as its an impersonation and its rather creepy actually.
Well we can compare Human Revolution to the other successors to classic titles.
In Bioshock for example they got away with copying the entire major plot twist mechanic from the game they were succeeding, namely System Shock 2.
The friendly voice of Atlas turning out to be the villain Fontaine. Exactly like with Polito guidance turning out to be SHODAN's.
With the same mindset I was expecting DX:HR to have Sarif Industries imprison you in their secret underground bunker after the few starting mission
. Nothing like that happened and I appreciate Eidos Montreal for at least attempting to make their own story. It didn't end up as good as the story in the original but, for me at least, Deus Ex was never so much about the storyline but about the compelling setting, gameplay and characters. All of the latter are spot on in HR.
I agree that the ending seemed rushed. Panchaea is nowhere near as memorable an endgame as the bunker was in Deus Ex.
You just get to chat with a couple of characters and like always they tell you what to do for them. In the Bunker your infolink was constantly bombarded by the sides convincing you to choose to help them along with Page taunting you.
This is not just about the ending though. Not enough infolink chat in this game
. You never felt lonely in the first one with many characters commenting on you actions.
In HR the different endings are separated by a few steps. You just save the game and watch all of them without giving the choice presented too much thought. In the first game you had to go through a series of steps while navigating the bunker to trigger each ending separately. Lets say the endings were 20 minutes of gameplay apart. It's those 20 minutes that made you actually consider which choice would be the best. It was great for immersion. Just before finishing the game you would consider the consequences of what you have done.
As for the little clip after the credits I wonder if:
Dr. Reed is evil or is she just being manipulated by Page. Also I wonder if it's safe to say that it implies that the Dentons are clones of Jensen.