Right, so i ran through it like you requested.
Koth_waterfall
Non-aesthetic comments.
It's not symmetrical. This is an absolutely MASSIVE problem in competitive mapping, where everything has to be razor-balanced. The rooms under the waterfall give red a different route past their opponent to blu, and blu can rocket-jump into red's "staircase". Questions have been raised about the thoroughness with which the competitive judges tested the maps: but were i a competitive judge looking to shave a few hours off judging time, i'd remove this map on asymmetry alone. Sorry, but this is a major problem.
You should nodraw faces that players can't see: it saves on compile time.
Aesthetics final score: 43
There's some really nice use of the tf2 theme here. The rooms near the point and some of the OOB areas show a definite understanding of tf2 detail, and although there are definite issues with some of the more complex detailing ideas such as density of detailing, or making sure everything makes logical sense, a solid basic knowledge is shown.
Density of detail is done basically, with a few of the more major routes detailed more than their surroundings, but overall detail is very low-level. Only large areas have very much detail which is a shame: the point building and the routes up to the balconies could do with more detail. Lights attract the eye sometimes, but not really enough. Of particular note is the balconies. They're so high- perhaps too high- that they need every trick possible to persuade players to look up and see them, because otherwise you won't notice them at all. For more information on density of detailing, see Nodraw.net's excellent article
here. (Also see YM's excellent "Detail in TF2" Articles on that site)
Detail in small areas and corridors is fairly low, and definitely needs work.
Immersion is the maps other major problem: lots of props feel unrealistically placed, such as trucks in rooms they couldn't drive in to. For more information on immersion, see
this article by Grazr. Most occurances i saw of this are pointed out in the Min.us album below.
Album:
http://minus.com/mbezMUhjXyMP4v