High priority for review & approval:
Medium priority for review, feedback/iteration, approval:
- activity sequences - https://gerrit.wikimedia.org/r/615560
- user - https://gerrit.wikimedia.org/r/615561
- page - https://gerrit.wikimedia.org/r/615562
Note: A/B testing fragment is a work in progress in collaboration with #product-infrastructure-data, is being discussed, and is not ready for review yet. Similarly, the UI schema fragment is a rough sketch at the time of this request.