Automatically assume role after logging into account

[sventenraa]

Is your feature request related to a problem? Please describe.
We are using a setup that requires us to always assume a specific role after the initial console based login.
Unfortunately we are unable to directly login to this role from the web console role selection page due to a organisational policy constraint.

Describe the solution you'd like
Allow a role to automatically be assumed once a user logs into a specific account under a specific initial role

Describe alternatives you've considered
Adding another initial role to the role selection menu in the aws web console. <-- blocked by internal policy.

Additional context
This feature would work somewhat similair to the automatically assume the last used aws role function.
But instead it would automatically assume role x when logging into the account under role y.