As much as I love this map's theme, it has quite a few flaws. Don't get me wrong, VALVe made the right call including this in-game, but there are some glaring issues.
1. BLU's spawn is really hard to push out of.
2. RED can defend second way too easily.
3. While I do love dynamic gates and stuff, the cart stops far too often and for far too long at the gates. (Kennel and Last).
That said, this map is very creative visually, and looks amazing.
I'd always hoped to revisit it with some changes to 2nd and 3rd specifically. I don't know if that will happen since I would need to do a lot of testing to make sure any changes don't negatively impact the fun parts of the map.