Building damage = Score/cash penalty

[Hythlodaeus]

Not sure if this has already been suggested, but for an enhanced game feature, how about having scenario destruction having an impact on your mission score, or better yet, forcing you to pay straight cash reparations, so as to make things a little more challenging in the later game? I feel this would make the player avoid abusing weapons like high explosives and blaster bombs, unless they're really necessary, or when it's "safe" to use them (like on pure wilderness maps).