This map is awful, come on, you've been making maps for well over a year, and they're still terrible.
I'm not saying this to be a dick, I'm saying this because if it's been this long, and you're still incapable of making something even remotely good, you really should start searching for something you are good at, or can pick up easier than tf2 mapping :S
As for the map itself, there's shit tonnes of empty space, huge rooms with nothing in them, gigantic sight lines, and it's just overall not fun, and way too fucking big.