I think the game looks good enough, wait till you've played it fully to completely judge it, and with mods they maybe able to fix things to how you like it, of course depending on the engine capabilities.
The post talking about damage done to the ground, leaving craters, maybe a decal that looks like a crater could be used, especially with bigger explosions like dynamite, c4 or mortars. a bit of soot or burnt mark doesn't seem enough.