I guess my dream of a true End Stage force of Rippers devouring the world, lead by The Parasite and a Malanthrope with a full set of Hive Guard protecting the towers and a random fex's to crush any little bit of resistance is gone for good.
It sucks, you can pretty much run any stage of invasion except for the End Stage...that's always been my favorite.
The fluff for the list:
Sliver fleet Disorder
Disorder is the remains of a splinter fleet that had almost finished consuming a world when it was hit with an Exterminatus. As noted on the world of Tethris and Araidne V, some things can survive by burrowing, namely Carnifex's, due to their massive resilience, and Rippers, due to their sheer number, some survive.
Disorder is a shattered bearly coherant mass of flesh, directed, not necessarily controlled, by the new found leader the Parasite and the sole surviving Malanthrope. The swarms of massively enhanced Rippers, both crawling and winged horde forward unloading torrents of fire as a new threat rears its head. A new form of Ripper, larger and far more potent in combat, this new threat seems to be this fleet's version of the Hormagaunt.
The few remaining Carnifexes have begun to shrug off the massive injuries suffered in the bobmardment and have begun rampaging the desolate world, slamming into the combats they encounter, having evolved to survive the harsh conditions that exist in a post exterminatus world, their reinforced carapaces aid their survival as they belch bioplasma at thier foes while their scything talons rip apart the enemy.