Just like pearl b long we reduce the size of the wall or whatever that is in b main where they hide and spam. Also remove the extra area on the right, this would make counter spam a bit more easier.
My only problem with this is that B main is defender-sided. Pushing into B site is a death wish because you can get shot from mid, and two places up the stairs. A single molly can damage your entire team. The "problem" only happens during post-plant.
Move the b main door, all the way over to the wall, but they would have to make the site easier to hold for attackers, maybe make tenz box not be spamable, and close the window