and that might be why this was shown
We seem to be the only candidate at the moment that could coordinate anti-Ascian efforts between the source and the 1st shard at the moment. So from that stand point it seems less jarring and would give it reason jump back and forth.
They "normally" have the MSQ prong at the start at the start of an expansion. assuming to reduce load at the launch splitting the player base. Having both prongs done before starting the main adventure.
Also have split copies of the zones to reduce the zones player numbers they later remove . To reduce load at the launch on a zone.
They may have built these functions into the story this time.
One prong leads to the 1st and sets up the rules for shard hopping.
Lakeland and the Crystarium
The other? a covert mission the destroy the new Blackrose plant.
found in southern Othard version of the zone called "Amh Araeng" on the 1st
The rules for shard hopping is something they really need to do early on in the expansion as we are likely to do it a lot on more day to day play. dealing with retainers, jumping to an fc or house to stop demo, do other content like hunts , the cacpot/other mgp things, daily Grand Company turn ins, etc.
Then on to the main event on the 1st. still thinking there will be a mid point return to the source for reasons, then the events in the trailer play out and we return to the 1st.
I hope they have a curve ball in having us travel to the 13th to suck up some darkness and weaponize it against the light on the 1st.