"Disc Wars" from Tron Legacy is one of the best original end game Deus Ex tracks!
https://www.youtube.com/watch?v=nRZLV_LcZ-E
OK, so it's not actually from the original Deus Ex at all. But take a minute, close your eyes and have a close listen.
You're in late game Deus Ex, getting closer and closer to unraveling the conspiracy. Big drums and driving strings as you navigate big installations, climbing ladders, overcoming obstacles, sneaking around.
You've got these great atmospheric synths that feel like something out of Liberty Island or Vandenberg. Glitchy drums that take you back to those rough samples from the late 90s/early 00s in video games.
And then those arpeggios that feel like they're straight out of the Deus Ex menu music. A cool, detached, disconnected, professional even keel, like you expect from a JC Denton with nerves of steel.
About the only thing missing is any of the actual Deus Ex themes.
There's no new Deus Ex on the horizon, but maybe this great track from another universe gives you a little new experience in the Deus Ex universe. :)