I've been thinking about adding dice to Rounds. There are already a few dice-rolling apps on the Play Store, but nothing Holo. In this mock-up, the pips would swirl around for a second before falling into order. It's similar to Rounds' spin-the-bottle feature.
Dice are tricky: pleasing everyone makes for a complex app. Yahtzee players would want 5 dice and scoring. D&D players need their 20-siders. I'm a Nexus Ops fan myself, and would need distinct dice colors for each player.