Good question, because I'm interested in that too.

Literal: Good question, because that interests me too.

(a)  

Good idea, because i want to know that too.

(a)  

Well, the question is uninteresting / boring / not so good.

(a)  

Well, don't ask that question, because that's too personal.

Literal: Well, the question is not, because that's too personal.

(a)