Well, mostly because we are too lazy to get to agreement
Anyway, you can work on Doom review and shots. I was thinking about doing it myself after playing it again recently, but knowing how you can get enthusiastic, it would be just a crime taking it away from you
But Spidol, use original version. No better textures, new features and similar. Just plain old Doom. Anything extra would go under extras. Speaking of which, I don't think we should host anything that is a fan made and available for downloading where it was created. But a link with one or two sentences big explanation at the bottom of the review would be fine, off course.
And for now, leave Doom 2 as it is. We still act as some kind of museum and stick to original releases on the main page, so shots are fine. Still, anything extra can be considered, but review and shots stay for now, unless more of us staff members agree we need something else.
If you feel it hasn't been explained how important and influential Doom series was and that future generations should know about it, do it in Doom review. After all Doom 2 has almost identical gameplay, no need to praise it on both pages.