Agreed with your entire post (snipped a bit for space). However...
...I also think Kid A is right, nobody here seems really offended by it or even deem it controversial. Why that word was brought up I'm not sure, but maybe we shouldn't be shouting about the weird 'violence is OK, sex is taboo' double standard that exists in (mainly) American media. Although I totes agree that it's a dumb double standard!
This I can get more into, and I slightly prefer the first trade cover for example since it also shows the faces of Alana and Marko. Gives a bit more of a 'this is a family story' vibe. Although I guess technically it's about Hazel, and it's a gorgeously drawn cover (those eyes!); but I do see your point. It's not my favourite Saga cover either, though that's mostly because many others have been SO great.
Kinda agree, mainly because it'll be a chunky hardcover that's not exactly optimal for subway-reading. However I guess they have the right to feel embarrased/uncomfortable about it too? Although I find it odd to think that people would really notice it and give dissaproving looks, but if that's really the way it is... I recently read Maus in the train and noticed someone looking at the cover, mostly just with vague interest, but it did suddenly make me feel self-concious about reading a book with a Swastika on the cover. Not the same at all obviously, but I do understand the sentiment of feeling self-concious about reading in public. But anyway, worst case scenario just throw on another dust jacket or something.