Consider someone from a country with poor passport freedoms. Normally, if they lived in their home country, they'd need visas for lots of places. But now they l

Consider someone from a country with poor passport freedoms. Normally, if they lived in their home country, they'd need visas for lots of places. But now they live in Europe. Thus, the places that require visas depends on: 1) The home country. 2) The destination country. 3) The holding of other residence permits. That person does not need a visa if they live in Germany and want to travel to Belgium, but they do if they want to visit London. And the only way to know that is by considering all of the above points, not just their home country.