Board Thread:Warhammer 40k General Discussion/@comment-24383134-20150518143519/@comment-25177957-20150519203225

I'd estimate the only Imperial threat that would do serious damage to Commorragh is a Space Marine force the size of an ancient Space Marine legion (about 50,000 Space Marines from 50 chapters), led by a powerful group of Chapter Masters (or Primarchs if they return), as well as a billion or more of Imperial Guard, millions of Inqusitorial storm troopers, hundreds of thousands Sororitas, 20 or more Titan Legions and other Adeptus Mechanicus forces in huge numbers, as well as half the entire Imperial Navy. Even if the Imperium won the battle, casualities would be enormous and the Traitor legions, Tyranids, and all other threats would be able to reach Terra easily. The Imperium just doesn't have the time nor resources to bother with this, Commorragh is a true danger, the High Lords of Terra recognize that, yet there's absoluetely nothing they can do to Commorragh. Let's also not forget that Commorragh has failsafe devices which can be used in an emergency, so if the Imperium decides to launch Exterminatus (which would be extremely difficult to do since we can estimate Commorragh is the size of a small Star System or larger), the exterminatus weaponry could be contained or nulified.

The Tyranids have a low chance of posing a threat to Commorragh, and the Hive Mind most likely has little knowledge about how the webway works or what's in there. If Tyranids captured Ork genes however, and inflitrated Commorragh and began breeding exponentially, then Commorragh would have a problem, in that case, everyone is screwed any way. So the only potential threat right now to the Dark Eldar is total anarchy if Vect dies.