Availability Group with log backups to NUL We currently have a database in SIMPLE recovery and are planing on setting up an Availability Group for reporting purposes (Enterprise SQL 2016).  My understanding is that this will require moving the database to FULL recovery.  We have no need of the log backups and no interest in storing them so I was thinking about setting up the log backups to NUL (bit bucket).  Nothing I've read has said I'll have any problems with this but I wanted to make sure I'm not missing anything.
No, you aren't missing anything except the opportunity to do a point in time recovery of the database.  AG's protect you from MOST hardware failures but they don't protect from user errors that drop a table or truncate data. Even if the business didn't have a SLA for RPO I would have log backups running as a DBA just to cover things, but you can backup to DISK='NUL' and the log will clear just like you backed up to a regular disk file.