I would like an in game ability to spectate as part of a team (including the team vision) with the intention of mentoring lobbies with the feature enabled. This would allow higher ranked mentors the ability to casually spectate matches and actively help the newbies with questions/strategies/experience.
Changes:
Mentors option in advanced settings (default off)
Join as Spectator/Mentor features
a. Join Team as Spectator granting a Spectator tag
b. Team(x) Spectator Group with a Join button.