The dice display isn't quite ready to work yet, I probably shouldn't have added it to the screenshots on Itch, my bad
As for the D8, it influences all of them. I'll definitely be adding a cap in the future though, because it's currently too strong!
With regards to the D8 upgrade, perhaps a late/endgame upgrade to uncap the D8 scaling would be a nice touch. If nothing else, some would appreciate the callback in the full version :)