Why Eden is not MSQ?

[EdwinLi]

Yes, but in this time in the end of the MSQ. Show then going on that direction, and in others expansion that wasn’t the case if i’m not missing something.
Also in all cases fells it was a waste but in this case it may change the world not only a certain location.

There is a high chance Eden may become one of those "will happen no matter what" events with the only difference being if WoL took part in it or not.

For Crystal Tower story we know it happens no matter what but the difference is that WoL did not get involve or did get involved in team NOAH.

For Eden's case it may focus on Ryne, Thancred, and Urianger resolved Eden's events without WoL's help if WoL "choose" not to do Eden Raid thus anything Eden related will then only mention Ryne, Thancred, and Urianger but if WoL does take part a 3rd Dialogue option opens that will result in a alternate dialogue including WoL.

They are exploring Alternate Dialogue paths now with 5.0 expansion which we see in the MSQ.