User blog comment:IamJakuhoRaikoben/Chapter 437: Magnolia, Review./@comment-7418318-20150525081144

It'd have been nice if Elfman had stayed in Magnolia all this time and helped rebuild the city and later stared to rebuild a bit of the guild hall.

Personally I think he's innocent of the guild hall's destruction, since he was controlled, but he migth think differently about the matter and might want to atone by rebuilding it, even if only in part.