Trusting mods is all very fine...

If I were boss admin of a forum, I'd want to [say once a month] press a button to bring up a graph/chart of stats analysis of modding behaviour,
just for the benefit of fairness & transparency to monitor the performance & quality of mods.

Mods with an unusually high score of post deletions and thread closures would require closer scrutiny and maybe a a quick informal pm chat.

Mods with a high intervention pattern on particular 'controversial' thread topics might require extra attention and additional 'feedback'
pending review of their modding status and privileges.......

This procedure shouldn't reqire too much time per month...

seems fair enough to me....