User blog comment:SoulRise99/HISHE: How Fairy Tail Should Have Ended/@comment-25693405-20170728040156/@comment-25693405-20170731035207

To the random user: Save your insults, they just make you look ignorant. Having Erza deal Acnologia a deathblow would require Erza being some kind of superhuman, which many people subtly thought was being hinted at the entire series. I would rather have Acnologia be defeated by a team as well, but having all the dragon slayers team up to beat him is just too cliche. Acnologia is clearly more powerful than all of the other mages in the series combined, that's why you need a crossover for his defeat to make any sense at all. Several series could have provided this force, but I'd rather not name them. I don't want to accidentally trigger a flame war.

To NoNickNeeded: I never complained when Wendy turned from a supporter into a fighter, but I do think the change was rather abrupt. The entire ending of the series seemed rather rushed to me.

To ToShinShin: Having Wendy kill Acno would be a giant plot-twist, and plot twists of that type are fun :) I don't see any reason why Wendy has to be pure support.