I couldn't disagree more. In fact, I think that would be the laziest turn the fiction could possibly take.
The Rasalhague Dominion is one of the most complex and interesting creations in BattleTech's written history, a true fusion of Clan and Spheroid that has become something greater than the whole. To just break that up during the first actual internal crisis they've experienced is simply not true to their shared story to date and does all of that groundwork a huge disservice. The RasDom has earned its right to exist and not see the writers go the lazy route.
And that's leaving aside the fact that an actual sundering of the RasDom into its constituent parts would be an unmitigated disaster of catastrophic proportions for everyone involved, and for very little payoff.
I'm speaking in generalities, but honestly, I feel as though a polite dust-up and hair-trimming of the Dominion touman to fit the ilClan plotline, ready to sit there and prepare for the 4th Bear-Combine War for the next real life decade, while stuck being forced to play Happy Families, isn't very engaging.
As for the Dominion being one of the most complex or interesting creations of Battletech, or it living up to it's 'true fusion' advertisement, or it's earning an irrevocable right to exist, we'll just have to agree to disagree, because I don't really get anything from it as a Rasalhague fan as much as I might if I were a Ghost Bear fan myself, but I don't want to push anyone's buttons at all.
The ensuing geopolitics aside; that can be written a number of flexible ways, favourable to many parties, depending on the bigger IlClan story in mind, there are greater factors at play with neighbours, and no-one has a truly free hand they can play.
I'd rather we roll with the punches and create interesting and new conflicts, instead of spending the next decade retrospectively tinkering to justify a cuddly status quo that frankly only really services Clan Ghost Bear fans, no offense intended.
I feel as though you can only broaden opportunities for good stories by providing Rasalhague fans and Ghost Bears with their own separate consolidated factions and goals again; it's not the first or the last time to see faction splits, and there seems to be a useful opportunity to potentially do that.
Going through a tremendous time of dissent, upheaval, war, and potentially, failure, just to end up with Bears being more entrenched in Rasalhague than ever would be a tiring waste of effort, and as a Rasalhague fan, kind of sad and embarassing from a personal perspective.