Why Eden is not MSQ?

[Dualblade]

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.

The Crystal Tower (as well as Alexander and Omega) aren't a matter of if the WoL was present, but of WHEN they were present. The implication is that your WoL WILL do it, or would have in the alt future, at some point. The question is just whether you had already done them all already or if it was at some unknown time in the soon to be future.