We still haven't dealt with the Infinite Dragonflights yet, expecting probably a time change/dragon themed xpansion, cata 2.0 prolly.Well, Ion said we're going to deal with Sargeras' sword at some point. Since Blizzard works 2 expansions in front of live. That would mean 10.0-3 would be dealing with that sword and most likely the Void.
If there is a time shift, that means we need to pay attention to who comes to the shadowlands with us. Jaina, Anduin, Thrall, (insert mortals-anything but an troll//undead/elf/draenei) will age if not in SL. From the comic, Anduin is an old man. This would mean we might see mortals randomly pop up in the Shadowlands. Might be a 9.3 moment where we get aid from "champions" who died during the time spent in Shadowlands.
This makes me question why Tyrande is confirmed in SL. She's already immortal in the sense of aging slowly. They spent time on Jaina, so if she doesn't come with us, she'll surely die off. Then there's bringing Thrall back into the picture, if he doesn't come, he'll be dead too. Also can't forget the entire Horde council - most of them age and will look entirely different if we jump to Anduin being an old man.
I have a feeling if they don't fill in the plot holes, the story is going to become an extreme mess. I can already see 10.0 being the Dragon Isles/Void Expansion with Chromie taking us back to see what happened while we were in SL. I hope not, it's better to just leave characters dead. I can also see Wrathion/Ebonhorn having a ties to the Dragon Isles and the Void corrupting them.
i think in the "macro" storytelling, it can line up and seem cool. I think the loose ends will be too hard to wrap up.