Heh, I agree with a lot of your points (though I do find it a bit ironic that, just once, you're more positive about some cultural item than I), but I'm not sure about your assessment of Yivo's morality. I can see where you're coming from regarding skhler loneliness, but still:
We just have different opinions on Yivo, I suspect. My big problem is that shklee was... not so much unsympathetic as inconsistent. I guess a truly inscrutable alien being might, to my finite human intellect, come off as both a sleazy rapist and a benevolent parent-figure. Either that, or the writers just f***ed up. Occam's razor and all...
Oh, and I think it was lame to give Yivo human-like facial features. "God" was just a collection of glowy spheres, and yet managed to come off as a sympathetic and somewhat interesting character.
And gah, that "provocatively dressed" line...