Overall I liked the changes.
Thanks for making the spawns closers... I feel like I've lost some hours of my life for the amount of times I played nuke and had to just sit there while I ran out of spawn.
Ramp feels great and what you did with the vents remove a lot from the CTs ability to rotate quickly between both sites, which is one of the things that made it so CT sided.
As for outside, I'm not sure: maybe it will be too easy for Ts to take?
Secret is confusing, as well the part below ramp, in B, but I don't think it's a bad thing.
To me it seems that the map is more balanced in your version, maybe even T sided, because of the changes to vent or outside.. But this is something only time would tell.
Even though it's seems easy for Ts to take outside, they can't really plant the bomb in there, so I see matches where CTs are kind of trapped inside the silos, with caos around them.
Should be fun.

PS: I don't really like the boxes outside, because it looks as if I can jump on them, but the invisible walls made me break my knees :(