1. wikimetrics should allow user_name to be the key in report outputs.  Right now, only user_id is allowed and this is not great.  LiAnna, Jaime, and Jessie are definitely interested in this, and have mentioned it a few times.

2. wikimetrics should allow "generated cohorts" as implemented by user metrics api.  These are cohorts defined by reports on other cohorts.  For example, if we run report R on cohort C, then generated cohort (GC) would be: GC = {user | user in C and R(user) is true}.  Dario is definitely interested in this, and Jaime might be as well.