His death would further the CS agenda, by getting rid of the last reminder of SF.
But wouldn’t it also leave Regina utterly alone? I mean, I see what you mean by CS, but Emma’s role in Henry’s life has mostly been secondary to Regina’s. It’s not like Emma is the primary caretaker — pragmatically speaking, Henry shouldn’t be that much of an obstacle to CS, no matter who the baby daddy is.
People are already doing it
#headdesk
On a related but different note — the more I think about Emma’s evolution (involution) this season, the more I think she is becoming similar to… Rumple. At least the Rumple of the last few seasons. Both are single-mindedly obsessed with something to the point of being entirely indifferent to the moral or practical consequences of their actions and pursuits. In Rumple’s case, it’s his loved ones — like Bae and Belle, and now his unborn child — and also, presumably, power. In Emma’s case, it’s CS. To me it almost feels like Emma’s never fully gotten rid of the darkness, which seems to, among other things, ramp up the obsessive, selfish, and “addiction-prone” sides of a character’s personality. From the fact that she was still hearing the dagger, to the way they are doing her make-up, to her utter obsessiveness with Hook, there’s something a little… odd about Emma. And the whole “prophetic” dreams thing. What if it’s not just a MacGuffin? Is it possible that she’s still harboring some sort of DO left-overs?