Engineers should support vehicles instead of destroying vehicles by themselves

@MZR_926 It used to be that engineers were a separate class to anti-tank. They got shotguns (although in BF2 Anti-Tank got a shotgun as an expansion weapon), mines and the repair tool.

It was pretty rare they were almost never used by anyone who wasn't a tank driver (or someone as a dedicated repair *, which itself was very rare except with clan members working together).

They they got lumped into the same class (like assault & medic, sniper + spec ops).