Kind of self explanatory. I've seen a couple times people mentioning how they'd like dice specific to each game CRB or some variation in the dice. I've always thought it would get in the way of the cross compatibility to change existing dice in much of any way. Then I thought that it might be possible for FFG to add some layer of new mechanic and have some nice dice to go with that. Some ideas I had.
Adversary/Encounter dice - A way to randomize and assist in sandbox style play or in whipping up home brewed modular encounters.
Sabacc or even just generic gambling dice - Create an in house EoE/AoR/F&D dice game with unique dice.
Expand the Squad/Squadron optional rules with specific dice or even a die to be used with the current dice.
The light saber die - A unique die to be incorporated in the light saber skill and regular combat. Not to OP it but just to add a layer of uniqueness.
Just some stuff off the top of my head.