I'm having trouble applying this eminently reasonable line of thought to the realm of party politics. I'd think it's likely that parties will continue to peddle their brand, above all else. So the Scottish Labour Party, freed of the need to pander to the imagined desires of the English middle and working classes, can talk about nationalisation, higher taxation, and universal access to education.
The SNP will talk about what's best for Scotland - including such things as encouraging immigration and the dash for green energy.
Independents will grow stronger at the local level - this is already the pattern in the North and the Islands, and will spread to the Central Belt, as local issues become more easily dealt with at a local level.
Fringe parties (like the LDs and the Tories) will work to develop their own brands, and will continue to be represented, and probably to hold a balance of power.
I think we're heading for interesting times.