I played and spectated a couple of pugs on this map today and I have to say there wasn't much I didn't like. Really enjoyed playing with the new textures/lighting and skybox, was a nice change.
One thing that could be problematic is the spam angle into garage from standing on the now lower crates (credit to mangachu for finding this) If you stand by the corner of the diagonal box you can shoot a rocket all the way down to the far end of garage by the pill bottle (even farther to underneath dropdown if you crouch). Being spammed this early when pushing garage makes it really hard to push mid without forcing uber or taking a ton of damage. Could be easily fixed by rotating the second diagonal crate a little bit so that it blocks the view.
standing:
http://i.imgur.com/Om8ysKj.jpg
crouching:
http://i.imgur.com/kM49Ero.jpg
explosion marks (third is when standing):
http://i.imgur.com/y5ZMRuf.jpg
standing inside the garage where you can be hit from this, your rockets will hit the metal above the doorframe if you try to shoot them
http://i.imgur.com/rFvfBCG.jpg
you can only start shooting them when you get halfway through the corridor
http://i.imgur.com/qDjo4X3.jpg
edit: another thing to think about is holding on the now expanded upper area on second, because it's so open it makes having a soldier or demoman up top more viable and lets you spam somebody pushing in with very little risk of dying. Plus, a demo can spam pills and stickies on point without being able to be shot.
screenshot of soldier angle:
http://i.imgur.com/lD20zf0.jpg