My 2 cents.
Finally map is bright. Great!
But it's kinda flat - not so many places to jump - so You cut off a nice piece of URT. More over - Follow usual Del's advice - 6 orientation points. When ppl will play there they need to communicate easily. Currently You have blood baths.
5 more to go
And as for layout. I'm not an expert, but corridors are very sniping friendly. They are very long and go through almost whole map! It's easy then to camp around a corner. i believe it might be consequence of "crossover-alike" layout.
All in all - n1 alpha. Don't give up, polish it until it shines:)