How in the fuck would they reasonably bring Sphene back? Either they treat her like post-shadowbringers “Ardbert” where it was just Elidibus skinwalking as him, or she’s somehow actually back. The former is a recycled plot point, and the latter is just fucking stupid.
Simple. A better written story
wouldn't bring her back save for reference.
Just tossing ideas at a wall here: Let's say Gulool Ja is dicking about with Solution Nine systems trying to figure out what he can and can't do as, essentially, its new administrator. An erring twitch, or maybe even a voice prompt (probably by Troon Lion because, let's face it, we have to shoehorn her into everything this expac) suddenly pulls up some nebulously hidden away historical record on Queen Sphene, and a B or C plot of the patch stories going forward surround us finding out more about Sphene as a person, or at least, what the circumstances of her rulership over Alexandria was when she was alive, and getting into the nitty gritty of that. Maybe we get some context for the reason why she was just a wooden plank in terms of personality. Maybe that context has to do with the fact that Sphene was never allowed to have a personal life of her own to discover who she was as a person, not with the weight of rulership bearing down on her shoulders, so she ended up throwing herself wholeheartedly into the responsibility of serving as a beacon for her people because it was all she knew. Maybe we get hints here and there that Sphene may have wished for more than that. Maybe it even gets suggested to us that Sphene could have had far more personal, selfish desires that had nothing to do with serving Alexandria, like wanting to see the world, taste new foods, experience new things, all for herself.
Doing it this way, you could build upon Sphene's characterization without actually UNIRONICALLY reviving her, and you can play into the expac's themes of learning more about something (or someone in this case) you didn't know and couldn't understand, accepting the inevitable, and learning how to move forward from the mistakes of the past. Hell, all of this could even give the Troon Lion another character-building moment as a leader-to-be regarding how best to go about integrating the Alexandrian citizens with the Turali and the people of the Source, encouraging them all to go out and live the lives their queen wanted to live, but couldn't, instead of essentially shackling themselves to a comfortable, high-tech tomb that they can't move on from.
But that's just one little sperg's idea of a marginally better written story adhering to the themes set on the table, instead of the nonsensical slop we're getting dumped on our plates right now.