User blog comment:IamJakuhoRaikoben/Chapter 518: Master Enchant, Review./@comment-130.105.140.154-20170123081718/@comment-60.50.95.87-20170124062757

Which is why God Serena getting killed off turn out to be good. Mashima's tendency to not killing off characters is actually hurting the story more than helping it. There are abundance of characters but with no direction whatsoever for them. There's really no difference it whether they're alive or dead cause they're practically dead in the story being useless, meaningless and all.

Just look at this arc itself, Mashima inserted the other guilds only for them to be nothing but failures as FT takes the spotlight again.