I don't think it sucks but it is different than the others.
I'm not sure I like seeing the game morph into a "laser and ray" gun game which this map kinda does, but truth it as the waves of zombies get stronger things do need to adjust. I think it might of been more to the theme of the game to just be able to buy stronger bullets and not have the fancy light shows involved (even though they are kind of cool). First i thought the strength of the new guns was a great adjustment but it still all comes down to running out of ammo.
I think its about time the phase out a few (useless) guns from the box, in there place add something like a reload all your weapons thingy. I just think in later rounds money isn't the issue but time might be and pulling a kar or carbine really sucks. I think on this map double tap is a major no no given the cost of ammo on these guns. get rid of it as a perk, an a bandoleer and/or a stopping power perk machine.
Of course as glitches are found my thinking might change however.