I think just making another group of 2nd/3rd gen stars would accomplish nothing. It wouldn't get Dibiase over just pairing him with 2 other guys who aren't over. While I like both Dibiase and the Uso's, I think they could make a much bigger angle out of it. I'm talking a full blown war between all 2nd and 3rd generation stars under contract to WWE. Maybe not EVERY single one, but probably all on TV and maybe pluck one or two out of FCW. Imagine this storyline.
Ted's in a slump right now. He's most likely gonna get dumped by Maryse and seem on the brink of losing it all. At Wrestlemania this year, say there's a Tag Team Turmoil match for the Tag Titles. The team of Husky Harris and Michael McGuillicutty win the belts after the random interference of Ted. Later in the night, Husky and Michael help Ted to win Money in the Bank and it would now seem the 3 have a sort of alliance. Husky and Michael could eventually leave Nexus under the reasoning that Ted helped lead them to gold where as Punk was only concerned with himself to the point where he let Husky get kicked in the head and other examples. Also, Michael starts going by his real name Joe Hennig. Ted can later on RAW explain that with the current status of RAW and SD both being ruled by large groups (ex. Nexus and Corre) that people seemed to be more interested in surprising acts by random new comers, then the real talents of 2nd and 3rd generation stars who had this business in their blood. And to avoid getting swept under the rug, the 3 of them had decided enough was enough and they would be out to take everything they wanted. Thus, the Fortunate Sons is born. Soon Ted can bring his brother Bret up from FCW to join the group, putting the group at 4. Adding the 5th member is when the angle would get interesting.
With Ted in line to become WWE Champion with MITB briefcase, Husky and Joe holding the tag belts, and now Bret available to chase the U.S. title, Ted scouts a Diva to complete the group. This leads to the heel turn of Natalya. With the group slowly building dominance, we're now in the middle of the summer, and Ted want's Natalya to recruit her cousin DH Smith, to give the group more muscle. Smith however has shown disappointment in Nattie's heel turn, and refuses to join the group. This eventually makes him enemy of the Fortunate Sons, who after growing frustrated in his rejecting of their offers and bad mouthing them, end up jumping him. A week later, a similar situation breaks out, only this time, The Uso's come to the aid of DH, turning them face. Now with a small group forming with Smith and The Uso's, we put the finishing touches on a Rebellion.
The Uso's are easily able to convince their cousin and former manager Tamina to join them, matching them up almost even with the Fortunate Sons. But they're still out numbered by one, and that's when we again pluck into FCW. Promising to reveal a surprise 5th member, the Rebellion (which is what I'll call them for now) eventually introduce Richie Steamboat, son of The Dragon, as a member of their cause to fight off the Fortunate Sons!
So in this Stable War we'd have..
The Fortunate Sons: Ted Dibiase, Bret Dibiase, Husky Harris, Joe Hennig, & Natalya
The Next Gen Rebellion: DH Smith, Richie Steamboat, The Uso's, & Tamina
If they all finally clash at Summerslam, then feud throughout the end of the year, with all members of each stable getting some gold, and maybe even a potential point where one stable holds all the gold.. then this would be an angle with HUGE benefits. It would make all involved bigger and more relevant stars. By the time the feud was over, I'd expect Ted to be in the main event, DH to be on the cusp of main event status, The Uso's to be a very over face tag team, and Husky and Joe both able to break away and succeed on their own. Bret might have to stick around with his brother for a bit longer, and Richie could easily be on his own in a position similar to where Daniel Bryan is now. It might be easier to wait a while before going through with an angle like this with so many stables in the WWE right now, but with this situation, the Nexus would be down to 3 and would probably be close to dissolving.
But yeah, that's totally how I would do it.