User blog comment:IamJakuhoRaikoben/Chapter 442: The Law of Space, Review./@comment-1153699-20150629150307/@comment-7418318-20150629201018

Maybe they don't have to deal with the 730 guilds.

If those guilds are only kept in check by the fear of the Spriggans, then taking the Spriggans out will probably cause those guilds, or at least part of the, to rebell. Who knows, some might even join up with Ishgar.