So... yea, generally I wasn't haven't a really fun time on this map, it wasn't horrible, but I wasn't haven't a good time. One of the things that I noticed was that most of the times, the cart barely got to the first point, let alone the second. Only once did Blu win, and it was a very very long run. The map itself is quite large for a pl map. In my opinion.
I know you will hate it, but if you really want to make this map fun, your going to have to do a bit of work to the already detailed areas, specifically right around point 1, inside the building, that Hairpin U-turn there is horribly cramped and not easily accessible by most. A soldier/sticky demo/sentry can easily lock that place down... which happened in the test today.
and not to sound like a jerk, but iirc, some of this is feedback that people have been giving you today, is the same feedback people have been giving since a1...