Turns out the GL isn't really as fun as hand grenades (or for that matter RPG), but you do get to bring loads more grenades.
So far, "hard" just means about double the numbers of enemies driving around on backroads (though I haven't tackled a base cap yet). Which is ok, because as soon as you take out a jeep, another rolls up before you have time to loot the bodies. And, before you know it, there's 4 jeeps in a big-ass bonfire. Also there seem to be more critters (hide $$$).
Edit: After playing some more on "hard" -- it seems the enemies are also a) better at spotting you, b) attack more aggressively, often by driving off-road right at you, c) more apt to flank your position, and d) shoot straighter. Haven't made it to a base to attack it yet, keep getting myself killed on the road. Last night I was flanked from two directions by jeeps with mounted guns.
:-&EDITED: 20 Sep 2018 13:52 by DSMITHHFX