I support this. I open an (almost) identical WTH described as:
As admin of HA, I can create X different dashboards. I would like to have a way to map user A to dashboard a, B to b… Kind of a login page. And user A wouldn’t be able to go to b and vice-versa. All the available solutions (see [Per user lovelace dashboard, how?](https://community.home-assistant.io/t/per-user-lovelace-dashboard-how/323714)) for me are unideal ways to accommodate that missing (at least for me) feature.
This other WTH has been rightfully closed by an admin.