Blueprint Inputs: Dependent (Cascading) Selects

I would like the ability for a Blueprint to dynamically populate an input selection dropdown. This would allow us to populate the dropdown selection with options such as all Spacelift Spaces in the account.

What I’m trying to achieve is being able to populate all Space ID’s as options to select.

Current Set Up
If there is a new Space (e.g., team-c-space)created after the Blueprint is published you currently have to create a new Blueprint, manually update the Blueprint with the Space ID, and publish it. This adds a non-trivial amount of work so that Blueprints are up-to-date with items like Space ID’s and IdP teams.

inputs:
  - id: space_id
    name: What Space Should The Stack Be Stored In
    type: select
    options:
      - team-a-space-12345678910
      - team-b-space-12345678910

Ideal Set Up

inputs: 
  - id: space_id 
    name: What Space Should The Stack Be Stored In 
    type: select 
    options: 
      - ${{ spacelift.space_ids }}