I don't see Christian getting another run as World Champion anytime soon, if ever. There are too many other younger guys on the rise right now and the title scenes for both the WWE and World Heavyweight Championships are either set or about to be set for the forseeable future.
I'm a fan of Christian, have been for a very long time, and I'd have no personal problem if he got himself another title run. It's always nice to see wrestlers with talent and work hard get to the top, even if it's just for a little while. However, Christian's best role right now is probably putting over other talent while still looking great in the process. He beat Cesaro in a relatively short but good match. Cesaro looked good and it looked like the match could go either way. With Cesaro possibly winning the United States Championship this Sunday, I don't think things are over between he & Christian. If I'm not mistaken, his loss to Christian was his first one on one loss since coming to WWE.
There are a lot of talented young guys in the mid & upper mid-card picture right now that are much younger, fresher and healthier than Christian is. Guys that're showing a lot of promise like Cesaro and Sandow look to be on the rise. The Miz has returned, is the IC champ and will hopefully get back on track. A strong run with the title could do a lot for him. Cody Rhodes is someone that could easily move back into the mid-card title scene or main event picture at any time. Daniel Bryan is among the most entertaining guys going in WWE right now. Ryback is getting over well , as is Brodus Clay. There are several guys that haven't made it to the main roster yet, are said to be close and are already generating lots of positive buzz like Dean Ambrose and Seth Rollins.
Christian is still in good shape, he can still go inside the ring and still has what it takes. At the same time, he's getting older and he's started to have injury issues for the past little while. His ankle injury, for instance, kept him out for the last few months of last year and most of the first half of this year, including knocking him out of WrestleMania. Christian is someone that has a lot of respect and credibility among fans. Other veterans that are popular and have shown a lot of staying power over the years, such as Rey Mysterio and Kane, have also started to have issues regarding injury and age. While they're still able to deliver, and with their best days probably behind them, using that credibility to help put over others that're both younger and healthier might be a better role. I look for Christian to retire within the next few years, same with Kane & Mysterio, so it'd be a good way to use their status to elevate some lower guys on the roster.