I actually agree with you to a certain extent, but just so we're clear - I was looking at texture contrast on a micro scale, rather than the macro.
I never said it didn't look great I just said the texturing looks bland to my eyes but yeah the architecture and lighting is really nice. As I said in my last post with anything there is going to be a difference of opinion one person will like something while another does not. Anyways it's just useless bickering back and forth here so I would just like to end it at that =)
For example, in some wads, you'll see a dull grey rock with dull grey metal supports. Because they're got a similar colour, they lack contrast, and the architecture blends into itself. Get say, some wood and metal together, and they stand out nicely. (Wood and metal together is fairly common in this regard.) But, add what I've decided to call a 'hightlight texture', like redwall or the custom orangewall, some lava, and so on, and you can create another layer of contrast again. This is something I think this wad does really well, and thought I should point it out.
Sure, you might have wads like Deus Vult with a huge variety of texture themes, and that can be fairly interesting, but I think some of his texture choices were fairly poor in areas, not because he's a bad mapper (he's one of the best mappers, architecturally, that I know of) but because he didn't spend long enough to develop each theme. (This usually takes me a long time.) And I think this is where we've got fairly different opinions on what looks good - I get the impression you prefer greater mixture of brighter colours in your maps than me, where as I prefer dark, decaying textures - many of which are brown. (This is part of the reason I dislike the standard tech-base textures, perhaps. Or maybe I've seen too many tech-base maps that look the same?)
Anyway, I just wanted to add this in in the hope some constructive conversation came out of this, as it's a topic I became quite interested in while I developed my maps, hell, maybe there's a thread topic in there somewhere...