I would bet the Padres will be listening on offers for Soto. He's got 1 year left. They failed at making a juggernaut offense. Tatis, Machado, and Bogaerts are going absolutely no where unless they do what the Rockies did and pay someone to take them.
However, I agree that trading for Soto, paying him, and then immediately cutting his value in half by sticking him at 1B is a monumentally stupid idea. If you trade for Soto and then pay him, he is playing LF. Happ becomes your DH and he's gone in 3 years.