Slums and Meltdown and Cargo are atrocious...especially during objective based games. They're probably the three worst maps in COD history. Slums is especially bad during domination...if the other team captures 'B', you might as well leave the room.
"Koko ga kisama no hakaba da!" - M.Bison "WOOLAY!!!" - Quan Chi
Hijacked could have been good if they'd just added a bit more to it. Another tunnel underneath, perhaps a rear launch area for jetskis serving as another entrance to below and a cargo hold near the front that has a hatch that can be accessed from above deck. Might make it so it's not spawn hell.