Please remove "compelled fairness"

You are right to believe in self-improvement. BUT…
Oh, another one:

Well…

Here it is message from a dev who sadly was the last to leave:

(This is for you Hoku. Let us keep passing on this post that was apparently largery ignored… missed by me in the first place included.)

Now, I agree that too much often, even without any bias from the system, you end up having to carry for a whole team of weak allies (speaking as a mostly QM playing guy… although solo ranked is not that much better in this regard), which you can not always lead to victory alone, especially when a bad hero comp MM adds up to it.
The OP’s suggestion of more balanced matches is sound in the end. We should be paired with and matched against comparable playing skill levels with only slight differences to secure accuracy in game balance and skill gradual improvement (instead of absolute situations which help NOTHING AT ALL).