It's possible that even if Gubal isn't related to the MSQ's it'll be relevant to Idyllshire's growth...much in the same way that the arboretum was. The place has been steadily built up over the course of the expansion and it seems like it's very close to completion. Presumably once Alexander is dealt with the general region will be much safer as well in the aftermath.
Though I do wonder if Ishgard will ever be repaired or if it'll simply be stuck in the past.