You should be more imaginative for your 'C' point, it's just gravelpit in a nutshell :/
this map is super sexy; the only issue i have with the detailing is how much grass you have on the walls. It looks completely wrong and bad and wrong and you should totally change it to be un-bad.
If everyone could un-bad all of the bad we'd have the perfect maps.
The forest cut-outs clash horribly with the mountain/rocks behind them, and the water tower in the distance seems uncertain of what scale it is.
In addition, your placement of the rockets is farcical and only adds to the overall business of the detailing.
That said, I think there's a lot of potential here.... I just don't know where. Slow it down somehow, make it more drab and boring, duller.... I don't know.
Something I noticed after playing this was that the texture work feels... unfocused. Especially around point C. Like, you've got brick, wood, concrete, and sheet metal exteriors all mashed together. The only other map I can think of that does that is maybe Mountain Lab, and it's not exactly held up as an example of good detailing. Furthermore, you have a cinderblock structure on top of one made of corrugated metal.
Also, I thought this was meant to be Construction Pack themed. Other than the crane, and the capture zone structures at A and B, I don't see anything that looks construction-y.
The only other map I can think of that does that is maybe Mountain Lab, and it's not exactly held up as an example of good detailing.