Not to mention the fact that they were selling Second line Mechs to the IS (Ha Otoko, Mad Cat Mk2). The Sharks state "Hey the warrior not the machine makes the result. and we will defend our deals by taken anyone on using only second line machines". The Falcons take them on and loose. The Sharks are shitposter with the balls to back up their talking
Best part is when all the Clans forgot about this little thing called "logistics" during the Clan Invasion, and all their garrison forces wound up desperate for supplies. Enter Clan Diamond Shark's Merchant Caste, soundly rejected by all "true" warriors for entering before their Clan's Warriors, but for those stuck on a backwater with unruly barbarians doing unruly barbarian things like fighting even they've lost, a literal lifesaver.
It really says a lot about how resilient Clan Sea Fox/Diamond Shark is that they bounced back from knockout blows over and over. Lose their totem animal? Screw it, we'll pick a new one. Get completely bodied on Tukayyid? Call in one of our best retired guys and give him carte blanche to rebuild the touman.
Best part is when he went form retiree to Star Colonel in a single Trial thanks to how the Sharks handled their reservist callups. See, unlike the rest of the Clans, their warriors actually get to call it quits when they're too old instead of getting sent to die as a
solahma, so unlike most Clans they have an actual emergency reserve of manpower. Now, how its usually done is you can automatically join back up at your prior rank minus one, or choose to test out for your old one. Or if someone decides to challenge you to a Trial over the right to rejoin... you get to join at their rank. The dude in charge of all that got challenged by an angry Star Colonel pissed that a
merchant of all Castes was organizing things, and ended up getting his ass handed to him by an old retiree. That of course was justification for him to rejoin at Star Colonel, since he had just defeated a Star Colonel in a trial.
As to the Blood Spirits, they're just weird and insular, and ended up getting Annihilated because nobody liked them. Turns out that being sympathetic to the Wolverines and their argument of "Nicholas Kerensky is a fucking dickhead." doesn't win you a lot of fans among the other Clans.
Also, Clan
Blood Snow Raven is an interesting one. Insular, but they have WarShips and dedicated naval Bloodnames. Presumably given their fleet they would have to have a rather above-average view of the Scientists and Technicians. I mean, it ain't a Warrior's job to make sure those fusion drives don't overload.