Regarding the story-fit of the Subclasses, I think the 3 psionic-flavoured Subclasses are a must-mention. For these Subclasses, one could imagine the characters developing these special/aberrant/psionic abilities as a result of the implanted tadpole. Those are
- Aberrant Mind Sorcerer,
- Soulknife Rogue,
- Psi Warrior Fighter.
One of the Aberrant Mind sorcerer origins is literally:
You were implanted with a mind flayer tadpole, but the ceremorphosis never completed. And now its psionic power is yours. When you use it, your flesh shines with a strange mucus.
I would be utterly and completely shocked if Larian was like "Nah, not gonna cook, just sweep all these preexisting ingredients onto the floor and ignore them." My assumption would be that you either choose Aberrant Mind sorcerer at the start and just start as a somewhat generic sorcerer until after the opening sequence, or they'll pull from the Aberrant Mind subclass as you develop tadpole powers as a sorcerer.
Either way, I have a really, really hard time believing Larian would ignore the low hanging fruit this represents, lol.
