Thanks for playing and for the feedback!
Yeah, my original idea was to have *something* unique about each die, like one die contributing double to your rolled sum if it was even, or a die rewarding wisps on its own. I wanted them to feel more unique, but alas - time is a thing.
Right now, I still like the puzzle of optimizing your moves. I think that informs which dice to upgrade when more than anything. Having three helps to mitigate the overall randomness as you're more likely to receive at least one high value than if you were rolling one or two dice. High value dice are more valuable placed in the top slots, and conversely low value dice are more valuable in the lower slots. Adding more uniquely defining characteristics or traits to each die would be a significant change to the design. While not bad, it's probably working towards a different game.