bringing Gideon back

hello, today i want to talk to you about Gideon. I think they should bring him back, even if it's just for one episode. This is to show him how the team/Spencer is doing. He was like a father to Spence, and he left him the same way. I think he should explain himself to Spencer because he left him behind with lost of questions. what do you think? should he come back or not because it is so long ago? bye xxx