Well, the original Deus Ex was also built on some awful cliches. Like all the conspiracy theories, Knights Templar, New World Order bullcrap, the nanotechnology handwave, a deadly virus etc... It was all there before but in Deus Ex it turned out incredibly tasty when all mixed together.
Same thing with the storyline. If I were to tell someone the story presented in the game it would sound like a low end sci-fi novel written by someone crazy.
AND YET when I played it it immersed me completely. The endgame choice actually made me pause to think what to do.
At first run I chose Tracer Tongs ending. DX2 later shows that that was a disastrously bad idea.
Maybe you have a point about the brooding main character.The cool thing about JC Denton was(apart from him being a psycho) his emotionless stare from behind the glasses. The guy in the trailer reminds be of the heroes in Square JRPGs, only less androgynous and more western.