I played the map on the gameday earlier today, and I actually saw it a while back and was eager to play. (I just like the idea of a circus themed map.) The map looked and played subtely like viaduct, but had it's own flavour. If that makes any sense. I also really did like that ticket booth area up back behind the capture point. Althought it had the interesting look and style, it felt very open and large, and playing as a pyro I felt too unprotected unless I was staying inside of a building.
I'm not the best at feedback in the slightest, but I hope this helps a bit. It might just be me feeling that large-ness.