User blog comment:B214/Shin DxD 1 discussion/@comment-3965848-20180901152036/@comment-3965848-20180901172222

See I find that wish troubling cause aren't their powers immeasurable or something so it be hard to "times 10" that, sometimes wishes are bound to the commonsense of the world they're in.

Not to mention you have to be really specific about the wish, like if Hades body can handle power without exploding, even if it did his mind might not, see there are a few loose ends.