Earlier quoted context omitted.
> but who gets to choose what attributes of populations are the right ones to group together into districts? Let the voters decide. Allow them to group themselves into self-selecting affinity groups, i.e. have proportional representation.
How would that work with representative democracy? With direct democracy that's pretty straightfoward: one could vote with conservationists on land policies, libertarians on drug policies, progressives on welfare policies, etc. instead of having to vote for a representative who probably disagrees wildly with at least one of those views.
With PR there would be a larger number of viable parties, for example in the last Dutch election, 13 parties got elected.
> instead of having to vote for a representative who probably disagrees wildly with at least one of those views
With 13 parties you'd probably be able to find one which is reasonably close to your own views.