[Piers]

What makes an established Democracy work is the ease of transfer of power and general low level of civil unrest.

The let the majority decide is a form of advertising slogan for democracy, an important one in that it is what makes people accept democratic decisions, even those the disagree strongly with.

You can come up with arguments like the OP’s as to how democracy can be made ‘fairer’. However such complicating armaments are unlikely to change the level of acceptance the general public have towards the democratic state.

Attempts too improve democracy tend to have problems associated with them. They tend to be overly complicated which will increase their expense and associated administrated overhead; also many people will have trouble understanding them.

An irrelevant luxury.