Allow players to make private/GM rolls

What Feature would you like to see included within TaleSpire?
I would like to see players given the ability to make private rolls in much the same way the GM can. Only the player who rolled the die and the GM would be able to see the roll result.

What situations would this Feature be useful?
Currently, I am running a 5e campaign with a modified rule for death saves: They’re secret. Only the player and the GM will know how many they’ve passed or failed, until they either stabilize or die. Surely there’s many other ways this could be useful, but that is the situation that inspired this post.

Additional Thoughts/Details

Maybe have a switch to enable it, like the switch that toggles whether players can see the boards menu. Could either be just a universal switch or a per-player toggle.