Well Scorpions are not Home Clan otherwise they would have still been back home
And I would hardly call winning a single war half a century in the making in a wargame setting a perfect run
If it were one then what are we supposed to say about Bears who rofl-stomped Blakists once, Combine twice plus whatever unspeakable stuff they did to Cats ins quick succession? And rapid integration with locals in several years instead of 7 decades while coming out smelling like roses with first major political drama only now?
And not once did they get their Clan Council building blown to confetti by disgruntled locals
Plus they have bult dozens of cool new original mechs in between (and fighters and warships and super-dropships). For the record Scorpions are still only being given Wobbie leftovers, funky quads and militia mech spin-offs (which is fine by me but still, it needs to be kept in perspective)
This is not me dunking on Bears. Fact remains that closer you are to the center of the action (Terra) the more drama you will get but also perks as well (FWL just stitched itself back together no problem like it's nothing and is already flexing on Wolves)
Feds, Wolves or Bears? High drama, high perks
Scorpions, Canopus or Marians? Low drama, low perks
It's just how the setting works, location is everything
As for Scorpions winning not being in doubt, how so? Check old discussions, nobody could even tell for certain if they would survive the book about Crusade in one piece (if at all)
Jaguar defeat, Operation Serpent, Great Refusal, Jihad failure, Feds taking New Avalon, Wolves winning Terra, etc... these are the things that were never in doubt and were much more major events than some war in Deep Periphery
Home Clans doing mini-clan invasion with rapidly closing window while sitting on the ashes of Wars of Reaving is not prudent even by Clan standards. Maybe it is for Coyotes but Coyotes are not running the show and are lucky to be alive. Adders run the show and their gophers managed to lose a whole warship to Hansa, one of those rare warships they need to enforce that no-go zone around Homeworlds to protect from taint. At some point someone will start doing cost/benefit calculations
EDIT:
Great, I typed another text wall. I swear this sounds lot more concise in my head
(Got banned from Reddit this way, that and language)