That's what I was doing, using mixins. In a way it's no different than stacking decorators, but soon enough you get helper methods being called and cooperation

That's what I was doing, using mixins. In a way it's no different than stacking decorators, but soon enough you get helper methods being called and cooperations between helper methods and you have no memory which class its implemented it. An IDE can help but that's an indicator that the solution has a readability problem.