Devs, while you are looking into xp/min for the challenges, how about rebalancing the ingredients too? You mentioned that the ingredients rewards have been increased when you nerfed the xp, is this really the case? I have not noticed any change.

Some challenges like circles of power, at 20 mins fixed runs, are still giving very poor returns (this challenge could probably do with time reduced to 15 mins too).

I would think that 20 to 30 ingredients per min would be more reasonable.