Parametric role request with manual selection of parameters

What is a one sentence summary of your feature request?

Parametric role manual request : Limit the dimension values that are referenced in navigation rules

Please describe your idea in detail. What is your problem, why do you feel this idea is the best solution, etc.

When a user request a parametric role and choose their own parameter values, the user is presented with all available dimension values.

However, many of dimension values may not result in the granting of any resources (e.g navigation rules) in a target system. This can be confusing and inefficient for the user.
A key improvement would be to allow at trole level (as we are currently able to specify if the parameters are mandatory or not) to filter the dimension values presented to the user, so they only see those that actually provide access to resources within a target system.

How do you currently solve the challenges you have by not having this feature?

No technical workaround. Change management and role request review.
Please let me know if it already technically possible.