As i mentioned during gameday, the map seemed too wide to me, at least in comparison to most of the other PL maps I've played. It's hard to explain, but I think it's part of why people seemed to get lost a lot.
I think this is only a problem in the starting area, before the first point. Starting on the blu side and looking out, it sort of looks open at first glance, even though you've really only got a couple of routes open to you... follow the track or head up the left by the sniper spire. After that point, I did get turned around a few times as I looked for ways to flank the enemy, but that's part of learning any complex map. I got lost on Badwater a couple of times my first run or two through it, and that doesn't really seem very complex to me now.
Big Rexy, I took a look at the space you said you couldn't fit through, and I was able to run in and out of there just fine. Unless I'm misunderstanding what you mean? I'm looking at the space between the large pillar and the corner, right where the blood stain is in that picture.
Finally, a small cosmetic thing. There's a blue barrel on its side on the concrete in front of the blu spawn at the start. It's floating just a bit. I didn't notice it during gameplay, just when I went back in to refresh my memory before posting this. Bring it down a unit or two and it'll be fine.
OH! One more thing, again something I only noticed when I revisited the map on my own. When you stand in front of the cart, as opposed to next to it or on top of it, it only heals you, it doesn't refill your ammo. You still get the blue healing beam off it. Move just a bit further back along the cart and you get your ammo.