The “solution” to this will be that you’ll only be allowed to have one at a time. Choose and choose wisely. Changing will mean a huge amount of paperwork each and every time.

Inconvenient? Tough. Unless you’re rich.

There’ll be a tier of “known persons” who will be allowed travel without needing a passport, a bit like how it already works for the British monarch (and probably others I don’t know for sure about).