So, after playing a little bit on 3kliks server and messing about a bit on a private server I think I found all my suggestions for the future of this map. And some comments too!

Keep in mind all of these are just ideas, and I'm terrible at this game anyway so my input may not be important, still, I try.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499936

This overhang defies physics. That is a problem.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499971

This cover is cool and useful, but it doesn't really make sense in a sewer, and it's a little tricky to maneuver with.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709500005

This little corner near T spawn and the baggage cover is really shady and it's easy to miss people crouched in it.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499895

I'm sure everyone already told you this, but this little pipe thing has a magical (but useful) invisible ramp. Just a mild break in reality.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499844

This little thing near CT spawn is cool for aesthetic but for cover, is rather frustrating to use. It's all rampy and slidey. Not that big of a deal but...It annoyed me.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499796

PLEEEASE make this into a sneaky spot, even if you have to add lighting or whatever, I just think this spot would be really fun for B.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499546

This little spot can be jumped up to and is pretty neat. This is just a comment. (It's in the little connecter room for B site.)
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499481

In the same room theres this little jump spot that is significantly more useful than the last but I like this one too. Idk if this was intentional or if you wanted to keep this because if people start to know about it it could become rather OP.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499429

I would like it if you added another ladder leading up to the catwalk from B site so T's have easier access onto it. The only way T's can get up there is to go into this narrow little corridor of death which could easily be AWP camped. That would get annoying as I can see the Catwalk as being great for defending B site.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499370

http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499311

Adding onto the previous suggestion, if you extended the catwalk it could possibly change B site all together. I don't know though, it could need playtesting.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499234

I think the glass pane door closer to CT side should be turned into a squeaky, to give T a little more advantage moving onto B
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499165

I think that the spot where I dropped the P2000 is a good spot for a bangable wall. The T's already have enough ways to get to A, and it makes it too hard for CTs to really even have a relatively safe method of getting there with them having to share a ladder. Or you could reverse it and have it be a T only ladder. IDK, I'd play around with this, I can see it changing the gameplay of A site quite a deal.
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http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=709499033

Just thought I'd say, this spot is really good for watching B site, and can get you a good pick if you're a CT with an AWP.
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I forgot to get a screenshot this but the CT corridor should maybe be widened. It's really thin and easy to AWP.
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I suppose that's all for now. I mean, I'm no map-maker (though I aspire to be one) so you don't really have to do any of these, but as a player I just thought these would be some really cool changes to a map that I already really like. So you do whatever works for you.