when one's coin wager settings are X for QM, it also uses that for Idle Arena matches, which often involve maps that aren't on one's selected templates. I would like there to be a default "no coins wagers" for Idle Arena matchups

That sounds like a great idea for UserVoice.

You can (newly) turn that off in QM settings.

when one's coin wager settings are X for QM, it also uses that for Idle Arena matches, which often involve maps that aren't on one's selected templates. I would like there to be a default "no coins wagers" for Idle Arena matchups

+1, This is a good experience improvement for those who both play Idle and Classic

plus when you go to QM and unclick wager button, you have to actually try to start a new game before the change saves, if you just unclick and click back button it doesn't save

just seems like settings for QM (part of regular Warlight) should be separate from settings from Idle