Really like what you've done with Harbour and I think the map has found a great home with you.
I'm out of the loop but here's my impressions from today's earlier test. Keep in mind I haven't played this since a16, and I haven't played TF2 before last week for a year or two.
New mid is good, but I hate the visibility.
I ended up seeing this a lot, and I started to really hate it. It's the easiest route to approach from and also the worst, and I guess that makes some sense, but please make it better. I can only see my team's container and closet, and everything else is blocked. Also, there's health/ammo I can't see, and the enemy team tended to hold there a lot as it was really advantageous to anyone coming through that door.
Then, as soon as I move forward a bit, I'm prey to the entire enemy team. Snipers can hang back over the opposite crates or snipe from the corner of their container thing. Just kinda sucks.
I think the better thing here would be just to switch your metal brush wall with the 512u security fence. I think that would make approaching a lot better, and mid is still set up so that teams can react, hold it, and fight back accordingly. As in, put the opaque wall where the fence is now--don't make them both fences.
You get kind of a similar issue here:
I was thinking a small window either to the side of the door or above it might help.
I really like the design of this building, with exposed studs:
I will likely steal it.
Also I marked something in the gameday because I could stand on it, and I was wondering if it was an oversight, but after playing a bit more and finding a nearby trick jump, I realized it was probably intentional, and if not I think you ought to leave it in anyway because it's great for spies or medics and not really a big deal either. Also I found some stairs with the wrong texture and marked them.
Overall A+ great changes when is Valve buying it