Varell: I wouldn't call it a remake, it's a prequel. That said you're correct about the latter half of your sentence,
cah: It is a prequel in terms of the timeline, but is a remake in terms of the plot.
I would say the whole 'prequel' thing is just a marketing twist,
I struggle to recall a single piece of HR plot that rings back to DX. Young Tracer Tong, sitting in the club with the same type of layout and stashes as the one in DX? :) There was something with the NSF, I believe, but can't remember what.
Other than that? Any mentioning of SARIF characters or events or any of HR heroes in DX? The only decent thing we have (besides cameo appearances of FEMA and Illuminati) is the post-credits piece of dialogue. Well, is this the best they could get?
Also, there are some disconnects. For example, note now ugly are the augments in DX and how Gunther Hermann, for example, suffers from it. Now, remember, how sleek are the augs in HR? And how come that years before SARIF has a flying machine that is way more advanced that the 'government top-secret black helicopter' in DX? (not to say, that in both games you have essentially the same "Save the helicopter pilot" mission).
So, I would say they just put it on the DX timeline, because 'prequels' sell much better than 'remakes' or 'spin-offs'.
Don't get me wrong, I still like the game and enjoyed playing it :) But I would much rather enjoy playing Bob Page on his rise to fame, or Anne Navarro, or mr Manderley, at least :)