Thanks so much for playing! These are fair points. Admittedly, some of the "weird choices" were likely because this is a 1-month jam game and we ran out of time to implement our full plan! 
But for certain, the resource magnet will be adjusted to reduce/remove the need to release click, and the cherub hitboxes will change to make stacking easier. We agree the number of souls needs to be the trigger rather than the building of the greater crystal. We are also working on more content for goals beyond the initial "soul race".