Once SERVFER-80563 is merged to master (behind featureFlagSbeFull), monitor for performance benchmark regressions in existing benchmarks that will have $unwind stages pushed down in all-feature-flag runs. Several of these are identified in the scope document:

https://docs.google.com/document/d/1axucS6MdfwNGg0Esw994lKttH0J_MByiLEkxTC6orTA/edit

Because these existing benchmarks will exercise $unwind pushdown, we do not expect to need to create a new benchmark for this.