Guys, is there or has there ever been such a thing as an "oversized" axle cone locknut?

Let's say that I've got some dish-shaped damage to my steel bike's rear dropouts caused by years of not enough clamping force by the QR skewer or not having tightened the axle nuts down enough. If my 10mm rear axle's locknuts that take a 17mm wrench could be replaced with larger ones - say, ones that could take a 19mm wrench or bigger - that would grip a greater area of the dropout's surface beyond the damaged section, wouldn't that work better, even as a temporary solution until I decide to have the damage welded up and filed back down to thickness?

This is the kind of damage I'm talking about: