alt accounts

Hey,
so I was thinking about a problem I see happening a lot with alt accounts, which is scammer alts,
I'm sure you all have experience linking accounts together and probably more than me, but the problem is, you can never be 100% sure it's the same person.
I'm not asking to show all evidence you have about an alt account or how you find them as I understand the risks of doing so (and I'm especially not going to show privacy concerns in the same sentence)

but because you can't be sure about it, this creates really unfair cases that are effectively impossible to solve.
so my idea is, instead of applying a BANNED BY SR tag directly, why not have a separate "suspected scammer alt" tag instead?
this way, other communities who use the SR api can choose to either ban those accounts directly as usual, hold them for admin review or just let them in, while maintaining the same level of warnings to normal users

cases where I think this may help is: shared internet connection, shared home PC and situations like that
there is no way to be sure it's the same person, it's unfair to call someone a scammer when say his brother is a scammer and he's innocent, but it's also unfair to remove warnings to the community that the account may be used by a scammer, even if they're two different people, if they're sharing the same PC then one probably can easily access the other's account.

what do you think about this idea? any better suggestions? is it a good idea or should I post it as a hurt feelings report?

I think you misunderstood what I meant, I did not ask you to specify what methods you use or what evidence you have (I infact agreed not to share them)
as for the "bro" situation, I know that this is the most obvious claim to fake, but between all those scammers I'm sure a legit case exists.

And finally for the separate tag, I'm interested in knowing arguments against it.
And I would assume justifying a banned by sr tag on an alt account shouldn't be any harder than justifying a separate alt account tag, if someone will believe an "it was my bro" in the second case, it would probably work in the first too.

A "suspected alt" tag would serve as a warning that a scammer is assured to have access to the account, whether it's assured it's the same person or not doesn't matter.

Fair enough, but what if separate tags were only available in the api while still being just banned by sr on normal checks?

Understood.
as for the API problem, I believe this is solvable by leaving the current API treat them as a ban tag, and only apply changes to future releases, that's if such a change is found needed.
Biggest problem with this is having to go over every single ban tag and sorting each accordingly.