You either have talent or you don't. It's not found in the future. Experience is found in the future. Sorry, but Wiggins is unequivocally a better than Gay right now. In fact, he was unequivocally a better player than Gay last year. Wiggins talent level is at least as great as Leonard's. Wiggins has the potential to be a tremendous 2-way player, just like Leonard currently is. He is a fantastic talent. Superstar potential. (Note I didn't say he is a superstar, just that he has that type of ceiling).
Then there is Towns. He is an extraordinarily talented player. As far as talent is concerned he's the equivalent of Cousins, maybe even greater than Cousins. I can't believe the stuff I've seen from him, such as making a step back jumper from 3 point land look as easy as a Chris Paul shot. Has a great feel for the game. Is Towns in his 2nd year as good as Cousins in his 7th? Probably not. But it's not a large gap.
Overall, the Wolves have HUGE talent on their team. Their challenge is going to be like OKC - keeping their hugely talented young team in tact and having all of their talented players buy in to the team and the defensive approach of their new coach. By the way, speaking of defense, their coach has great defensive talent to work with. Not just Towns and Wiggins, but also LaVine, who can shut you down on the wing. He shut down Collison like nobody's business last year.