It's definitely possible. I could see it happening one day.
He has all the skills to be the champ, hell, he just gave Weidman the toughest fight of his career. Had Machida been able to pick up the pace earlier, he may have won. Weidman looked great in the first three rounds though.
I don't think people realize just how good Weidman is on the feet. His ability to control the distance and time his opponents is pretty crazy since he's still so young in his career. The fact he can stand and beat guys like Anderson Silva & Lyoto Machida is simply amazing. Both are known to be very hard to time, to land a clean shot on, Weidman did an outstanding job against them on the feet. What makes it more impressive to me is that Weidman really isn't that quick on the feet. He had a very fast double, but striking-wise, he isn't all that fast. So it's crazy how he can control the distance, time and keep up with guys like Anderson & Lyoto Machida. Now he has to go up against another very fast guy in Vitor Belfort, should be a good fight.
Machida gave Weidman hell though, it was a great back-and-forth war. Sadly, I don't think we'll ever see Lyoto fight like that again. You could see how badly Lyoto wanted to win that fight, he showed tons of heart and determination.
I'd love to see Weidman and Machida fight again one day. That being said, never count out Lyoto - he may just win the title one day. Machida always comes back stronger.
Props to Weidman on his win. That guy is truly something special.
