I spent five years working on the game (that's x2.5 more years than it took to make) and am very good at what I do. Pay your respects, halfwit. There aren't many better gaming experiences out there than Deus Ex + GMDX.
It took you five years to learn how to use notepad?
Notepad++, WOTGreal, UnrealEditor 1 & 2, GIMP 2.0, NSIS, Audacity and more.
Deus Ex is largely 100% open. Your simple mind equates modding to config files because that's what you did once. For me it was pretty much full continuation of the game's development, but not touching that which I am not skilled in, nor even really needs improvement (story).
Authoritative muh untouchable vanilla! Lilura simp detected. Or you just have the same feeble mindset; that of a woman. Wait a minute I recall calling you out as a chick in the Prey thread. The evidence continues to accumulate.