I will never stop saying that Deus Ex is the best game ever made. So, being someone who not only is a fan of the series but remembers what happened with Human Revolution, I will not believe any in-game footage or promises from these devs pre-release. I'm done with hypeshit. The final product will speak for itself.
For the curious, the dev commentary basically revealed why there were so many fuck ups in Human Revolution: budget and time constraints. So there were neglected details, things patched up in the last minute due to a change of plans, and an unsatisfying button press ending because despite the devs wanting to make a game worthy of being related to Deus Ex, shit happens and we got what we got. If you've played Missing Link then you've seen the game made in a way that satisfies the complexity and freedom of choice given by a proper Deus Ex game (at least it's good enough given the conventions of modern era game design). There were also technological constraints, but it shouldn't be too much of a problem now I would hope. Then again, I've played Thief, also made by Eidos Montreal, and the level design there makes me worry that Mankind Divided might suffer from corridoritis and loading syndrome.