1. I would light up the locker room near heaven ladder, or even remove the wall pointing to ladder. Also I would enlarge the windows looking at outside a bit, to make CT's standing there, way easier to see.
2. The "saving corner" you closed off, beside the big garage has now a wall. I would put the same fence, as it's used at outside, so you can use the given background to give the map some deails.
3. The entrance to secret needs to be brighter, so I would put down a roof window. Also I would change the inside texture from the red wall to a brighter color, which fits better to the inside. Other than that I would lift up the overhead door and put the door from the right side to the back. At last I would remove the railing, as nobody really needs it and I see it would be used better the same way, as the staircase on Overpass works.
4. The windows on roof, pointing to lobby, which you can wallbang should be exchanged with breakable and transparent ones, which you can use, when you know the CT'S rush.
5. I would use the vents entrance the following guy used, because they avoid spamming and too hard rushing. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419424053 )
6. You removed 2 sides of heaven and made just one directly accessable. The opposite side is still accessable with a 2-man boost from hut. I would prefer a middle-way, which connects both sides, to make them still accessable the EASY WAY. (link (same): https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419424053 )
7. On the outside I would also add a door to A-Main, which is on the back-side of it (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419496603 )
8. The following remake (same as in 7.) has the (in my opinion) very best entrance to A (so the new hut). It's been done a PERFECT job and I would definitely include that and not the standard one. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419496603 )
9. I also really like the vent-doors in this version, because you can see through them very clear (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419496603)
10. I also really like his way of entering heaven with the extra-entrance for the CT's to enter the A-Bombsite. He removed the ladder and closed the hole in the ground. Then he added an open door, where the ladder was before. You can now enter heaven by going on the roof of the locker rooms and then jump into heaven. What this does is, that the CT's have to use the new entrance to make sure the T's won't rush in, before they do. This means that not so many players will be in heaven and it takes longer for them to come into heaven, which takes one of the biggest advantages of the CT's, while heaven won't be deleted. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419496603 )
10. One thing I would edit, where I have no link for is a way to get easier onto T-Roof. The problem with it is, that it takes 3 to 5 jumps in every version I see, to get on there. I'm sure this is improvable and makes it a lot more comfortable for the T's.
11. Thinking of all those players, who can't get the silo jump, you should think about another way to do it. One, which maybe is easier, so one of the biggest elements of Nuke could also be used in the Silver-Elo.
12. I found another very interesting remake, which I found some things you could include. First the thing is the surrounding of the silo, where he did some reskinning and stuff like that. I think it turned out great and you should think of adding things like that. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419613652 )
13. Also there is a small vent on roof, which you can shoot through. As you deleted that part of the roof it won't be possible to do that, but I think you should definitely check it out, because it's a great idea. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419613652 )
14. He also reskinned the catwalk. I would keep the current layout, but I think you could include his models without the railings (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419613652 )
15. He also took away a wall in radio room, so it's way bigger and more open. I think that's also a good idea. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419613652 )
16. The models he used in the corners of A-heaven, to cut it off, are very nice looking and a good way to cut them off. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419613652 )
17. The B-Bombsite is kind of close to your version, but a bit different at the same time :D I think it's a bad thing, that you removed the sideways there and would like you to put them back again. Other than that I really like the design of that bombsite, so you could also include that. (link: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=419613652 )
18. This one is just a design idea that I found. I don't really like his layout and model changed, but the design is kinda good in some spots. For example on ramp at the gate in the very back.

Besides all the critic and proposals I really like your map, which is why I give you feedback to improve it.