And it is very annoying when you want to go to B from CT-side and you receive a lucky shot directly. I think when you want to rush mid it is your own risk.
But if you want to go to B the bullet should be blocked behind mid doors for like 4 seconds after spawning lol.
Beside of that, some players are camping on T-spawn with AWM whole rounds. Maybe you could increase the campmeter in some areas?