Of course they should bring back Cryme Tyme. Not only would Cryme Tyme be a familiar tag team for fans, and one who does have a fan base, but they also are a marketable team with a gimmick that can add another competent team to the ranks of their tag team Division.
If they're serious about trying to revamp and really push a tag team division, then they should bring back teams that do have some potential long term and teams, like Cryme Tyme and even the Hart Dynasty, that they never really allowed to blossom fully because in the past they weren't doing shit, and certainly weren't being serious, about their tag team division. There is lots of teams, including Cryme Tyme and the Hart Dynasty that can be successful as TEAMS. They may not be at the point, like many tag teams WWE has, of being successful stars INDIVIDUALLY... but they don't need to be. They can be successful in a tag team where its not about individual personalities. They can carry that division as teams for years, and continue to hone their skills and develop their characters, to possibly become future stars if they do become INDIVIDUALS down the line.
The problem with WWE is they rush everything and break these teams up far, far before they've even reached their potential as tag teams, let alone reaching a point they should be singles stars. That's why guys like Bret Hart, Shawn Michaels, Steve Austin, just to name a few, started out as tag team wrestlers and remained so for YEARS developing their skills and personalities before breaking out on their own. They weren't rushed into it. Now a days teams are rushed into it and then when they're not successful alone, because they're young and haven't developed the experience or skills to BE successful, WWE gives up on them and throws them away. The Hart Dynasty was barely a tag team for long before they were broken up. Cryme Tyme was broken up and pushed individually far before they needed to be, and they hadn't even reached their potential as a tag team. Same will probably happen with the Prime Time players because WWE ALWAYS does it.
WWE needs to pull themselves back and return to some old traditions, because the way they did things in the past can sometimes be the most effective way. Not everything old is bad, and the way tag team divisions are done needs to de-evolve and return to its roots.