Siberia Rework:

Rework Siberia, it's the most one-sided map I have ever seen in an FPS game. The attackers get no cover, while the defenders have one oogajillion spots to cross-fire from. The attackers also cannot hold down a control point while inside a vehicle, unlike on Iceland, meaning that defender Engineers don't have to worry about bringing RPGs. The result is that defending Engineers can all pick the Talon to effortlessly fly-swat every chopper they see.