I hope the Dimensional Key turns out to not be what we think it is, and it turns out to be Auracite, but it gets stolen in the lead up to 8.0. And so we have to get it back, and our adventure send us back to Dalmasca where we defeated Ultima The High Seraph, and back into the Aetherial Sea where we defeated Athena where we learn that it is being mined for energy, and the mining operation is being carried out from Meracydia.