Might want to spread things out a bit more.
Examples being the high ledge where the imp cages normally are on The Crusher, and the lowered Rocket pedestal on The Gantlet. Some areas seem to just be loaded with weapons, as in if you go there you have over half your arsenal. Now onto more subjective items (Disagree with them all you want, just suggestions): Quite a few textures that are offset, not that big a deal, but something to look out for if you look back at them. Most of the bars in the area leading to the Red Key (normally) are invisible, they act as if they normally do in the original map, but simply aren't visible. Should be fine for it's intentional purpose though) (Also on 4 and 5 they need keys to open, not sure this matters too much, but since I wasn't actually in deathmatch I got confused.
Getting to the BFGs on maps 1, 2, 4, and 5 requires looking at the maps in an editor, there are no clues to the triggers or where they are, they're indistinguishable from their surroundings. I just did a fairly short run-through of all 7 maps and noticed a few problems:
