You seem like you're getting wound up. You should calm down. It's just a game dude.
No, but cover is better than nothing. Who said dig down in cover? MC's just have to hop along the edge until they get close enough to assault. The darkshroud only shrouds itself, and only grants stealth to friendlies, thus not allies of convenience. not to mention, having to buy a darkshroud and another unit to wrap the dreadnought is not a solution, it's an exemplification of the fact that the dreadnought is a weak link. Also, I'm not looking for advice (your words) from people who don't run dreadnoughts.