It's hard to say exactly at this point. I think that, generally speaking, all three members of The Shield are going to continue getting a strong push. WWE spent the better part of half a year building The Shield up as legit players on the roster. Now that they've got gold, and given that these are three guys that Triple H has a lot of faith in & faith that's been justified thus far, I don't see them being derailed mid push like we've seen with several stars on the roster as of late.
As has been mentioned, there's talk of having Rollins & Reigns ultimately enter into a feud with the Brothers of Destruction culminating at SummerSlam for the tag titles. The match will go forward if Taker want to do the match and the latest bit of info I read about it, within the last couple of days, is that most in the WWE feel that Taker will do the match. Allegedly, Taker has praised the work of all three Shield members and has enjoyed his experience in working with them. I don't look for the Brothers to win if the match goes down, but it'd be just another big win for The Shield and losing in a tag match isn't going to hurt Taker.
When it comes to Ambrose, I have a feeling that WWE is going to book him as the strongest US champ we've seen in quite some time. There are several good feud possibilities for Ambrose that could be pulled off. Christian returned Monday night and I can easily see him challenging for either the IC or US title in the near future. The Miz has a history with The Shield, so I could see him shifting gears to go after the US title after his program involving Barrett & Axel is over.
RVD is set to return at MITB and while I'm sure some are clamoring for RVD to compete in & win one of the MITB ladder matches, I simply don't see that happening. Given RVD's documented history and endorsement of Marijuana, and the fact that he was arrested on drug charges while he was simultaneously WWE & ECW Champion, I don't see WWE trusting him with such a spot. As a result, giving him the briefcase would, in my opinion, be something of a waste. Allegedly, RVD's schedule doesn't have him working house shows, only television tapings and ppvs. As a result, I see him being used similarly to Chris Jericho. Jericho works ppvs, television and house shows, but there are times in which he'll disappear for a stretch for a project outside of wrestling or touring with Fozzy. I see WWE ultimately keeping RVD built pretty strong, but ultimately using him to help put over younger guys on the roster. As a result, I think he'd be a perfect feud for Dean Ambrose to build further credibility as US champ.
I don't see WWE rushing to put any of The Shield members into a main event spot. It's too early in my opinion and it's opposite of the slow & methodical pace WWE has used to build them, which has worked out perfectly. I see The Shield being dominant champions for most of, if not all, of the rest of 2013 at least.