>>716144197
If they keep following Hades' foreshadowing words, then Meracydia should be next. Tiamat has been free for quite some time, now. But I can see the plot in that region being concluded quite hastily to focus the second half of the new expansion on a new shard after Y'shtola or the WoL accidentally activate the interdimensional key. They know the majority of the ShB/EW fans want more Azem/Ascian/Convocation lore.