The Idol is probably the most complex of the eight but we've smoothed it down a lot. Can you tell me exactly what you're not understanding on The Idol's Audience Reputation mechanic you're having trouble with?
Viewing post in A Monster's Tail (Quickstart) comments
Whether the maximum for the audience rep track starts at their Technique, or the level of reputation in that track (which is set at 3 in the beta), and if the size of the track increases as the Idol wins trophies.
Also does the Idol gain perks and clear their companionship drives upon gaining their trophies like the other journeys?