I am making an upcoming space western that needs an abundant robot race. I’ve made the Archon, a race of A.I that serve for optimal use and rehabilitation. There are 3 types of Archons: Omnics, Andi, Kavier. Andi and Kavier are done but the problem I have is with the omnics. Each subrace gets a bonus whether fire resistance or immune to slowed effects. Omnics get a choice between a miniature bag of holding inside them, Adrenaline (basically), or adding advantage to intelligence based checks. But since the subrace is the options I can’t add another option for them to choose one they like. Any ideas what I can do to fix it or add it in another way? (Besides me doing it manually on the character sheet)

adding this here for quality of life:

Race>Racial Traits> Archon Type> Omnic

The answer is simple. Instead of applying the subraces as Options attached to a racial trait, actually make them as subraces of your race and then attach the options to those.