Ok think I got something here. The blakests reinvented the SDS in terra orbit, thus creating a shield around terra, it wouldn't be till the mid 3090's that infiltration finally destroyed the system. by that time the blakest protectorate had expanded to nearly 300 worlds, creating a dense "Mote' in which opposing forces had to contend with. The Jihad was never actually countered, all attempts at a full scale responce were countered.
At the same time, from 3069 to 3090. multiple nuclear fusion SUICIDE attacks were conducted, a list of affected worlds includes but is not limited to THARKAD,, SIAN ,, NEW AVALON.
INDUSTRIAL attacks also continued, as the Toyama began it's march across the sphere, it took what it wanted. By 3100 it to began to falter of it's own mind and extended body. The clans conducted multiple rejuvinating attacks on these targets, reshaping it's teeth in the process.
NOW, the Blakests control of the HPG network, did stem any counter offensive, till in a raging madness, the destroyed almost ALL the systems they operating and controlled. Locally this was countered by the remaining house lords, to varing degrees of success. Over all the HPG wipe out was thought to be 98%.
Terra itself became a storm of unending warfare, as the factions began to devour themselves, with little in the way of information commerce the universe fell into a confused near stagnated economic political and comerce funk that would still have affects as late as 3175. Word of Blake would seem to crumble as a unified system and mission during this time.
Reformation is now the guiding principle and reconnecting with the peoples of the inner sphere. As to the AU, I would like to see HOW the known houses, units and corporations respond and that interplay of stratagy and morals. I have more development in mind, I love Sarna!!