Hi Epic and the Community,
I think you should create a good and UI way to fix parentless blueprints without using CoreRedirectors. This is a very irritating problem. Maybe, such a parentless blueprint should get the closest class of the one it derived from. So if my class was a child of an AActor, and my class was not found by a given blueprint, it should take the AActor class as its parent. And then we can open a blueprint and reparent it to my custom class replacing an AActor. Something like that.