In the first Critique, Kant presents a "problematical" concept of the ideation of reason, e.g. he talks about a focus imaginarium or something at one point. And his discourse on noumena as not "positively" conceived strikes me as postulating a sort of "erotetic limit" on transcendental concepts. Now, "transcendental" here refers to the boundaries of possible knowledge (i.e. that is Kant's technical definition of his use of the word), and erotetic functions seem natural to the subject of epistemology.
So is Kant presenting a system of erotetic logic/semantics, in the first Critique, and he just lacked the word for it that we would use?