@ContextBot I think a good way to model the whole KEI thing is like the relationship between corporations and unions. The clanless are the ground level minimum wage workers, clanless jōnin are highly skilled workers that have gotten great concessions, the KEI is the union that considers all clanless to be members whether they want to or not, the clan heads are uper management, shareholders and the board of directors all in one, the Hokage is an immensely powerful and independent CEO that can't be fired, and adoption is the act of promoting a worker into a prestigious position in order to make him abandon his fellow union members, except more so because they are legally not union workers anymore if they accept.
Haru joined us to get the Pangolin stuff and easy money for his family and then started to help civilians.
The KEI is not an organization that cares about civilians more so than the fact that they have clanless civilian parents.
Ebisu joined the Kei clan, probably to get even more funding and we know that he cares about the clanless.
The Kei clan is not like other clans. I would be surprised if most of the money the Kei clan head gets for his members through tax returns just go towards clan members proportionally, or even towards internal clan advantages. Being adopted into it in practice makes you
more KEI, even if it makes you not KEI on paper.
And Kagome is teaching multiple clanless, who probably count as KEI, ninja for free.
That Gokētsu likes to gift handouts and advantages to clanless (technically always KEI but practically loyalty to the organization itself doesn't matter) and has seemed friendly towards KEI endeavors doesn't mean that our proposal won't seem like a stab in the back if we blindside them.
Also, a clan that adopts a prominent KEI ninja is likely already positively inclined towards them, because you wouldn't want to adopt people you don't trust.
All clanless ninja are KEI ninja. Adopting some desperate clanless with promising abilities weakens KEI's negotiating position. Prominent and dedicated KEI ninja won't agree to being adopted anyway, except if it benefits the KEI as a whole somehow or if they are turned first. The risk is losing people who prioritize their own employment conditions over those of their fellow union members.
And I think most clans wouldn't want to anger their newest member by being anti-KEI and increasing the chances for some form of betrayal.
Some do though. And they'd love to answer said betrayal with a righteous crack-down of some sort.
We are mostly adopting people because of the Pangolin jutsu and to reward loyality anyway, we could just ally with people like Nakano and others for the Scroll hunt, if we give him cool stuff he probably doesn't care about getting the scroll for himself.
We have more reasons than those. Clan Gokētsu has multiple clan secrets and interests that don't always align with the interests of the clanless, at least not at a glance. A clan member can be convinced to do things for us that are just short of treason. We also get the right to punish them as we wish for internal clan matters, which has weight even if Hazō repeatedly assures everyone he won't abuse that power.
Then there's powerful stuff like, among others, our Shadow Clone scheme. Right now it's secret contained on a need to know even internally, but if Haru or Atomu prove themselves loyal or trustworthy then we'll try to get them the SC jutsu as well and, if successful, include them in our scheme. The same goes for any other promising ninja we adopt.
That said, I agree with you that adopting the partially handicapped ninja is mostly just about personal integrity and reputation, with getting a trustworthy assistant with ninja powers being a side benefit.
(P.S.: Sorry for the double post. It didn't seem right to edit all of this into my previous comment and I did wait an hour between them)