Interesting....I can see some aesthetic similarities in the environments. The regenerating health, reloading, slow, floaty movement, clunky animations, and boring gun play are thankfully not there however. The point of Doom isn't to reinvent the genre but to rescue it from every aforementioned ill.
One can't go into any FPS game and not be reminded of something; the genre is fundamentally quite narrow and inherently leans on familiar principles. Differentiation between games now is more nuanced and comes down to how well those fundamentals are achieved beyond just introducing new mechanics for the sake of doing so (though this is still a very important aspect). Even Doom 3, with all of it's darkness and awful monster closets, was revolutionary; nothing like it had been done before but yet it was at the same time incredibly familiar.
The most negative responses to Doom seem to have come from people who weren't playing the originals during the 90's or were and are now simply too jaded to enjoy anything without comparative thinking.
For me, the genre became boring not due to a lack of innovation, but that those innovations seemed pointed directly first at the console crowd (graphics and movement mainly) and second at the new type of gamer who just can't take being slaughtered. I realize that statement imports cultural elements - the psychology of modern youth - but games, being part of culture, reflect trends (or bucking them) and I think the idea of never having your game stopped due to being a crap player disappeared for 10 years. Only recently have single player games picked this up again - Dark Souls and Devil Daggers being good examples - and are punishing bad players with death and having to go back and do it again.
In this regard, Doom is a welcome gust of wind from the past and I believe it is important not so much for innovation (though it does have a couple of very cool new mechanics) but for eschewing some of the trends that seemed to have become embedded in the genre. Wolfenstein TNO was also enjoyable for this reason and also why the Quake: Champions teaser video was somewhat disappointing for me; it looked like it was embracing some of the ideas that have become prevalent which in an arena shooter I find abhorrent - character classes, 'special' abilities, etc. In this sense, less is more and why I have high hopes for the new UT (which is becoming overwrought itself, I fear).
And graphics. Doom looks amazing which is something I appreciate. As I said above, when you have the capability to see the engine without any restrictions, it is a marvel. I will agree that Snapmap is a mixed bag, but people are doing some pretty cool stuff within the limitations (which I believe can and will be altered or removed in future patches). I am not sure that id saw the same potential in Snapmap that the community did and now that they have a mountain of feedback, they may make some changes. Hopefully.
And I think to be fair LannFyre, you didn't really want to like it from the outset and seem to have some baggage with Bethesda. Of course you weren't impressed.