So it looks like I flipped the entire bsp 180 degrees and now it looks a bit weird compared to what it was. So I'm just going to put it here so everyone can vote and I'll do as the vote says.
What Cactus said, can you upload a few screenshots of what is the problem with the new map regarding to what you said?
Orange has been a mess for months. You can see players through walls, shadows are visible through walls from the side and from below. You've also provided no screenshots, and were a bit of a dick when asked for some.
Those new stairs right out of spawn are slightly annoying. The older ones were faster to use, if you get what I mean.
I've never seen it on any other map, nor was it as big of a problem before. It's gotten a lot worse. Before it used to only be in the house, now it's everywhere.