Personally, I think that it'd probably be a good thing, as losing a heavy is pretty hard but often they're easy to replace once it hits that stage of the game, especially since you're less likely to lose a heavy than one medium or TD in a pack, so you end up saving a lot of fuel. This is mostly in correspondence to team games, as not many players will field even one heavy in 1v1 let alone 2.
^That's just my thoughts, now go at it
