Multi-lingual federal environ in a direct democracy is what works for Switzerland and that can certainly work for the whole world better. Swiss setup may show the way to humankind everywhere for acquiring an integrated political approach while conserving local environs through the internet age.
The Swiss system favours diversity openning up equal opporutinites to everyone involved. That is how the Swiss may show the way for curbing separatist tendencies anywhere. Separatism in the name of freedom is not independence but integrating the diversity is that. Still the local characteristics could get conserved as well.