Can we not make full build Kayle a guaranteed win?

This champion has always been known for being utter crap early on and then scales to become a monster that has very high DPS while also being able to not take any damage for a few seconds. To me this isn't really healthy and I think you should spread out her power throughout the game a little bit more. I still like the idea of her constantly augmenting herself whenever she reaches a certain level I think that's really cool but I also think it's a little bit too strong as later on when she has her full build it's extremely hard to stop her.