I think the thread title is misleading.
If we're talking about adding story content to Abyssea zones we already have, without doing any kind of purchasable expansions, I'm fine with that. I think they were trying to fix the mistake of the first mini-expansions--too much story, not enough playable content--and overcorrected; virtually no storyline, and a lot of playable, if nearly identical, content.
If you're really talking about more purchasing additional abyssea zones--which I don't think you're advocating--then I cannot get behind you on that.
We already have 6 zones of Abyssea. Salvage has fewer zones than that, and Dynamis not much more. Counting Boss zones, Limbus has nearly as many zones as Abyssea, yet each zone had it's own unique mechanics. I feel like once I've done one Abyssea area, I've done them all.
The problem since SE raised the cap is that there's only about 1 thing to do that's current, and that's Abyssea,where we used to have many events we can do (Voidwatch not withstanding, and frankly, we need more stuff like this as part of the "Main" game).