I plan on wiring this into atlasCloudFeatureFlags and use this to gate UI in Compass and Data Explorer
This means Compass Web/Data Explorer will have parity with Atlas and only show $rerank UI to customers in allow list
I plan on marking this FF as 'preview'. This should set all the $rerank UI disabled by default on Compass Desktop. Individual users can then go the Settings > Feature Preview to enable the $rerank UI.
This does mean that the UI can be seen by anyone who turns the feature on but users not in the allowlist will be blocked with message ''Unrecognized pipeline stage name: '$rerank'' if they try to run a query.