I can't help thinking, Little Hawk, that your independent representatives elected to local councils which send representatives to regional assemblies which send representatives to a national parliament wouldn't stay party-free for very long. I think that, because people are people, groups would form, and these groups would soon coalesce into bigger groups and so on until soon, lo and behold, a two-party system had evolved.

The parties almost certainly wouldn't be called Democrat and Republican, or Labour and Conservative, but they might, in your country, be called Francophone and Anglophone.

You're never going to get perfect democracy, for all "Representation of the People" systems must adopt some compromise between workability and universal detailed consultation.

The systems we have (severally) have been tried and tested over time, have been subjected to amendment and, in general, work: not perfectly, but adequately. The law of unintended consequences says that if you make constitutional changes then you get results that you haven't foreseen. If it ain't broke, then polish it a bit by all means, but don't fix it.

One or two further thoughts:
Democratic is not synonymous with egalitarian;
Churchill (I think) suggested that democracy was the worst possible form of government... except for all the others.
Big Mick's postings in the Posse Comitatus thread are worth a read.