Blood Raiders are one sect of the Sani Sabik faith.
I had an old
character that was a Sani Sabik of the
non-Blood Raider type. I wrote some
fiction too. I'm far from an expert on matters of the fictional faiths of EVE Online, so what I have to say is probably best taken with a grain of salt:
Every faith has various interpretations depending on who is interpreting it. No two Blood Raiders will have exactly the same beliefs, just as no two sects of the Sani Sabik will have exactly the same tenets. There are certain commonalities, I'm sure, but it's a big enough Cluster of Stars, with plenty of billions of people to believe what they want. Pick some inspiration and run with it.
I still fear the day that a "sparkling" Blood Raider appears. :shiver:
[spoiler]As Silas said, TBL has a good example of such diversity. I wouldn't say that the main character is a
nice Blood Raider/Sani Sabik. He sure as hell used whoever he could to achieve his ends. I would even find it hard to classify him as Blood/Sabik other than that is the faith he was raised in. The faith obviously gave him the drive to succeed, to forge his own path. That is always how I have seen the
"Nice" side of the Sani Sabik faith.
On the other hand, there was a good deal of explanation of why the Blood Raiders are as they are, and enough fuel for the "they're evil horrible blood-drinking pillagers" perspective... but that's all it is. A single perspective on a unique and vibrant culture full of nuance and shading and colors other than simply "red".
Aso, don't forget that the main character did all he did not only for his dead brother, but his family, his
blood.
[/spoiler]
Just my two cents.