Ok, this first.
I have only played this map once.

Ok, lets start with the bad
Massive error box that moves on B site.
Bushes that block you.
Low quality textures on the ground

Now with the good.
Nice looking.
A Site is playable.
There are a lot of possible strategies for T and CT.

I would probably get rid of the error boxes and make a new, hd texture for the ground.
The bushes dont really matter, they look nice.

Also there are walls that look like they are walk-through-able but are solid and doors that also look openable but are locked.