The integrated taxes would be a very big step for the EEA, so would common company law and governance for these entities.
That said I think the headline proposal (single entity type and single registrar) is not important. The UK and (AFAIK) the US have few practical difficulties with multiple registrars and variations between jurisdictions.
That said I think the headline proposal (single entity type and single registrar) is not important. The UK and (AFAIK) the US have few practical difficulties with multiple registrars and variations between jurisdictions.