> every country requires you leave and come back to change or renew visa status

Not true for EU, either.

In fact, how it works in EU is (for non-EU citizens):

- Get a D visa (for residency)

- Get into the country

- Get a temporary residence permit which is for up to 5 years

- Renew residence permit when it's about to expire or basis (employment, study) is changed - WHILE being in the country.