I hate them, but that is cause I am always TERRIBLE on new maps. My KDR last night was probably .5 or something. On one of the maps there is also a huge glitch where you can sit in the middle of the map in a building and see through the walls and kill people that can't see you.
My kids like the new maps. I played on a few of the maps with them for a little while last night and they seem pretty cool.