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Epic 1 (Product + UI): Decision: Keep or lose horizontal unit nav. Approach: Either A/B test (from scratch or using pre-existing data); possible 1:1 or small group user interviews.
[UPDATE 1/25 - The MVP will keep the horizontal nav. We will explore simplifying through elimination in later releases, but can punt on epic 1 for now.]
Epic 2 (Product + UI): UI design for a community-wide solution. Takes into account testing results from Epic 1. Builds on right/lefthand toggles implemented by Raccoon Gang and Pearson.
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