I’ve heard that less than 1% of players complete the Prologue with all rewards from all nodes. What if there was a bonus reward for 100% completion on the Prologue? It may get more people to play all the way through/spend money.
A great prologue completion bonus would be a reset of all of the prizes available from the prologue.
A super great prologue completion bonus would be a reset of all of the prizes available from the prologue with a small corresponding increase in the game’s difficulty, to be repeated indefinitely. (This is a suggestion that someone else made on this board a long time ago, not my original idea.)
Yeah, both of those ideas are good. I’m close to getting all the available rewards in prologue. Only last two nodes have a couple of unclaimed rewards 
I really like the second one. Scale up the nodes and prizes. Remove cover prizes and make them tokens. Double all ISO, HP, and boost prizes.