That's right, those fiddly little buggers that no one can figure out how they work so the just dumb-ed them down so everyone can use them.
You have a Space Marine squad sitting in a forest (area terrain) and they've been shot up a little bit, some one's have been rolled so they are sitting at 5 guys strong, all equipped the same, no difference in anything. An Imperial Guard squad rolls up exactly 1" away from them, in like a giant circle around them. So if this 50man blob wants to assault them an not strike at Int 1 they better have some grenades right? Wrong, they better have some potatoes, some rocks, possibly a twig, empty soda bottle, whatever just something that's a piece of junk. Grenades are valuable, I mean str 4 plus D6 against vehicles, that's pretty good. Against guys in cover? Ehhhhhhhh not really worth it, just throw a a potato or something. I mean seriously? 50+ guys all throwing grenades at 5 space marines and not one guy goes down? The sheer number of grenades would take one marine down, but they just duct their heads and they are fine. Yeah or how about they duct their heads, 4/6ths of them are fine (2/3rds for those of you playing the home game) and we move on with the game. I mean seriously, my same guardsmen duct all the time (and some times for no reason at all) and they still get shot to pieces, but a grenade? Well we just dodge that. Oh really? I wasn't aware that you just dodge grenades now, Oh looks like you actually don't. See if I take this grenade launcher-Ahhhh I see, because it says grenade launcher that makes it so you lose your ability to just duct and be fine?
Start modeling your men/bugs/fungus/fishhorses/ninjagingerbreadmen with potatoes and grenades, that way it will be WYSIWYG.