And she's not always right, either in the moral or in the pragmatic sense - one thing that makes her human. She can make misteps, which doesn't take from her being a fantastic character but adds to it!

I think the Laura-is-the-Cylon-God thing mostly came from JennyO, and I was against that theory from the start, feeling that Roslin and Baltar were the two characters whom the narrative really needed to be human. Baltar because being revealed as Cylon would have given him a way to excuse his actions and reframe them in a positive light (as can be seen in the episode where he briefly thinks he is Cylon) on a Watsonian basis, and on a Doylist level, it would have felt like the show was saying "he's got all these flaws, but don't worry, it's not lilke he's human". And with Laura Roslin it was the other end of the scale - her living under a death sentence from the get go but (until they find the first Earth) continuing regardless, her growing into leadership and both her strengths and compromises as leader needed to be human.

As for "sweet spacemom", other than Billy, I don't think any of her relationships have maternal overtones. (Certainly not with Lee; that one starts out more like mentor-protegé with the occasional flirtatious undertone.) Including the one with Hera, who is of interest originally because of what she is and how the Cylons are fixated on her.