I […] So past certain tadpole consumption/power use, it should start by changing some dialogues […] And past another point, normal humanoid feelings should start disappearing. Romance makes no sense for illithids unless is to manipulate as the emperor does.[…]
This, I think there could be a cursor on an influence bar where TAV try to keep the tadpole dominated. Consuming or using too much illithid powers in a row would give the tadpole more grip.
First, after opening mind to some tadpoles, additional dialogue choices should be unlocked and then, when the influence of the tadpole is high, the player would be forced to engage in theses lines.
This could lead to breaking a romance, engaging potential allies, obeying specific orders… but it would eventually open new interactions.
