That's such a cop-out vote - it doesn't give any meaningful information
I voted for story and writing - a good story, to me, anyway, can overcome everything else. Everything else is secondary. My second choice would be lore. This depends on how it is approached in the game, but I really like it when a world feels fleshed out and living. In a way, it could be tied to side quests, as that's one way to flesh things out without resorting to a codex or pointing people to look at the website. Life and death choices, too, are something I find quite interesting. Perhaps I'm a bit odd, but I really love Bad Ends in VNs. Fate/Stay Night, Aoi Shiro, Corpse Party, Ever17, all of these had bad ends that added to the story despite being a game over and made me feel strong emotions in regards to what had just happened.
As to more waifus, husbandos, and battles, well, this is distinctly last for me. I don't mind a good romance sub-plot, but that's all it is to me - a sub-plot. The meat for me is the main story, politics, tragedy, and character development. That's not to say romance can't have that, but at least in terms of Sierra Ops, my interests lie in the conflict between Earth and Mars. As for battles, I'd like the emphasis on quality battles rather than quantity. From what I've heard the quality has gone up, but I'd have to see that first before I can say "Yes, the quality has reached the point where I want more of this."
2. Lore via organic storytelling
3. Life and death choices
4. Waifus and husbandos and battles, oh my!