Would be nice if such a system would make specific (and to the user clearly understandable) verifications possible, without revealing the users identity.
I believe that with technologies like IRMA/Yivi (https://irma.app/docs/what-is-irma/) this could be done securely and privately, though I wish the app wasn't so centralised in its token exchange. For this use case (with the government playing a role in the authentication already), that wouldn't be an issue, though.
Permitted services could request minimal data tokens, verified by one or more instances of choice, and the user would see the data being exchanged and with what party the data is being exchanged exactly.
In my opinion, this beats a lot of current implementations, which redirect to either a plain government login or bank login, where the backend does all the data exchange.
I have to admit that I haven't done anything with this tech myself because I can't be bothered filing a request for access for such a system. Still, I can see the potential here.
I think a lot of people would also be interested to add a citizenship/immigration status field to these sorts of IDs in the US. To me it’s kind of crazy how much redundant data there is for people in the US and reconciling it across government systems myself is one of those things that drives me crazy.
For checks like: age > 18