I'm glad you're enjoying it. I'm really intrigued by the characters of this generation and their allegiances. Ted and Andromeda's position is very ambiguous in canon so I felt quite justified in placing them in the Lawful Good (so-as-to-speak) category.

It's quite clear in canon that Sirius is completely irrational when those he loves are threatened. He's a clever man and it seems reasonable to me that he'd be aware of that and so only let a few people close.

Thanks for the comment :)