I can't see how this can affect the echo chamber issue in any way. Turning the "disklike" button into "respect, but dislike" hardly does anything to the substance of the general conversation topics. People are still socially afraid of presenting viewpoints and trying to make people do so with their own name and face will produce worse results VS twitter. Unless a monochamber is what you're shooting for.

To be fair to you, I hardly see any technological solution within humanity's current capabilities as a solution for the problem.