Like many of the plr maps for the contest, all three stages are, in general, too arena-like. It's small and very open, so there's not much in the way of strategy. When we played today we sorta just ran, got shot from all sides, and shot at people from all sides.
Whether you love or hate plr_pipeline, it's very good at letting you organize and flank the enemy, let engies build bases, etc. It's not just a giant battlefield.
In stage three, the other team's cart is hard to follow, as its often hidden from view.