Think this is a sensible approach. I don’t expect Ange to do any better this season than Mourinho or Conte. They are more accomplished managers than him. However, it will be a far better watch as we’re already seeing. And that’s good enough for me - top 8 somewhere and good football.
I’m hoping we don’t have fans who think Ange is some sort of genius who has unlocked the secret of football and don’t ever expect to get beaten again.
I think we have a better/different team than either of those managers had so don't see a reason to have their performance as a measure.