One of my ideas for AI cores being "unviable" is that if you have x amount of alpha cores, you get an x amount of chance (which grows exponentially to the amount of cores you have, where 2 your completely safe, and anything above 2 it starts getting bad for the player) where an AI core revolts, turning your colony into a Remnant Nexus that has to be pacified, and the AI core disrupts all your industries depending on how long you let the Remnant Nexus stay alive, with a minimum disruption of 60 days, and a maximum of 365 days.
This would make AI cores a real risk instead of just plop in and print money. However, if this mechanic is added, the administrator limit either has to be loosened or removed entirely, because administrators already have the limit of only having 2 max skills instead of 3, and you have to pay them a hefty salary. So its already enough of a demerit to hire a administrator over an AI core (which is free and has all 3 skills).
This rebellion ONLY happens with AI core ADMINS, so you can put your alpha AI cores onto industries and they wouldn't be able to rebel.