I think the Clans should have merged together sooner in their history. I think that the political century should have seen a merging of several Clans perhaps along the 'modern' Crusader/Warden divide. Probably under the dominion of Wolf (Hard Warden with Coyote and Adder), Jade Falcon (Moderate Crusader with Ice Hellion and Steel Viper), Ghost Bear (Moderate Warden/Bastion with Cloud Cobra and Nova Cat), and Smoke Jaguar (Hard Crusader/Aggressor with Fire Mandrill and Mongoose)} with Harvest Trials regularly occurring between them to deal with 'nonconforming' Warriors.
These Clans could have maintained the Status Quo enough in the Grand Council and there would be some very interesting games that could occur during that time as 14 Clans get Absorbed. I think that each would be forced to take action after the Outbound Light shows up for their own reasons at the very least to blunt the impact of their more ferocious brethren.
The ilKhan would serve as tiebreaker in the council and come from one of the lesser Clans. Each ovKhan controls the lesser Khans of the Absorbed who in turn have their own saKhan.
An interesting idea, although I'd change the mix some and have the power structure as: four 'top-tier' Clans dominant (Wolf, Falcon, Bear, Jaguar) and five smaller 'second-tier' Clans remaining (Shark, Cat, Horses, Cobra, Scorpion), with the latter allying with or against each other and the alpha Clans as needed. With a Galaxy or two apiece of 'mini-Clans' - ex-Coyotes, Adders, Spirits, Burrocks, etc within their new overlords - to add some variety.
Nicholas’s entry from Legends suggests that may have been his plan - form the unified ilClan first, then go back to the Inner Sphere. And then he ate a stray laser...
Maybe, although he didn't push for the Blood Spirits to suffer the same fate as the Not-Named when he could have. And the Steel Vipers were let off the hook when Kerensky could have seized upon the Traitor Khan's actions to destroy that Clan as well. The Cloud Cobras and Burrocks also had dissident rumblings during that period as well, although they might have successfully concealed those the way the Ice Hellions hid their own miscreants.