LogFAQs > #955941378

Yuffie DLC spoilers:

People are overestimating the Dirge/Deepground influence, their being in the DLC makes sense in context. Deepground's located under the Shinra building, Yuffie and Sonon go under the Shinra building, simple enough. I don't expect we'll see any of them again same as we didn't see any of them in the "main" game, and they still get buried underground post-Meteorfall. Assuming Meteor still gets summoned in the remake, actually...

If the Remake is successful enough after they drag out the main storyline, they could always go the "Remake Sequel" route incorporating Advent Children, Dirge, or paying off the Dirge secret ending (if that could even be considered a payoff... also we're going to be in the 2030s at this point but gotta keep milking FF7!!)

Though that's what they already said they'd do with Ever Crisis, so, maybe that's a trial run to see if it's worth making full/proper games based on the Ever Crisis chapter receptions. Though I also originally half-jokingly predicted that the remake would be 7 parts and part 5 would be a full Crisis Core remake, lol...