I just want to add here without taking part to Nirch's communities argument, that just because a weapon adds strategic element, doesn't mean it is not terrible custom.
Why is there graffiti all the way to the top of the building? It doesn't make much sense and sometimes plain wall is better considering you got big sunset giving the mood for that part of the map.
You need to redo your outdoor cliff displacements, they look horribly rushed and bad, rock spam on top of them doesn't make them look any better either. Also, don't use light ent for general lighting indoors, that is not what it is for, use light_spot. (Unless you are using them, in that case they need to be less strong as the lighting is boring as hell)
TTT as a game-mode in GMod attracts FAR more than 100 people a day, turning it into a sourcemod wouldn't attract anywhere near as many players. Source mods generally get attention when they're first released but slowly die due to being too obscure/lack of advertising.