^I've thought about this a long time ago.
On a map like El Alamein for example. there's a fuel pipe near each teams main base. If you destroy it, the other team's vehicle spawn timers are increased. It gives people a separate objective outside of normal gameplay (special forces so to speak) and give engineers something more to do.
It seemed like a good idea for huge maps like that where a battle was scaled down so much. And back in 2.0 the gameplay was more arcadey and it was a way of adding depth to a conquest game. But since then, I think FH2 has moved more towards 1:1 scale maps, more realistic fighting etc... this kind of approach just wouldn't mesh well with a map like Pegasus or Dukla etc.. Idk if it would fit in FH2 anymore.