Grenades cost resources, which is a good thing

[super pretendo]

Prevents grenade spam from dominating the game with no cost to the spammers. So with that in mind, I think all explosive anti-vehicle weapons should cost resources. Why? first of all, they should be powerful weapons, albeit clunky ones. Just making them not work against infantry is silly. So make them weapons that are powerful for their role, but cost something to use, and cost a lot to spam carelessly. I think everyone hates noobcannon spam.