I recently discovered that none of the methods of game notation I have been considering for Omnia are compatible with automated audio readers in that the audio reader makes no distinctions between different typefaces or forms of numbering (such as Arabic vs. Roman).
One thought I had was to add an exclamation point after numerals that pertain to randomizers. So, you might have John Doe, Tortured Proofreader 4!, Racecar Driver 4!, Karaoke Singer 1!. As you can see, it makes for awkward punctuation, and I'm not sure it would add much (if anything) to an audio reader's clarity.
I also revisited the possibility of adding "C" after randomizer numerals with the reasoning that it could stand equally for three types of binary randomizers: "coins," "cowrie shells," or "cubes" (as in "binary randomizer cubes" a.k.a. binary six-sided dice). Meet Jane Doe, Archaeologist 4C, Linguist 3C, Medic 3C, Stunt Cyclist 2C.
Perhaps I should just revert to the reliable basics of Ghostbusters and simply use the unadorned numerals. Jade Doe, Ghost Hunter 3, Comic Book Collector 4, Shopkeeper 2, Photographer 3. Surely anyone who learns the rules will know when the numbers refer to randomizers, results, or target numbers through context. Why complicate things?