The best hypothetical is also the last one.
Imagine if the Boston Celtics traded Rajon Rondo to the Utah Jazz for Trey Burke and Gordon Hayward. It would literally be the perfect move for both squads.
And, hint hint, it's still possible.
The C's are hovering on a rebuild, and this would firmly push them into a full one. However, they'd trade away one established player for a highly talented point guard entering his rookie season and a small forward with some serious upside.
Burke has the tools to become the next great point guard in this league, and Hayward has been impressive whenever he's on the court. While playing small forward during the 2012-13 season, the Butler product produced an 18.6 PER and held opposing players at the position to just 12.4, according to 82games.com. He was less stellar at shooting guard, but the results were still positive.
It's the Butler connection that really makes this work for Boston, though.
Brad Stevens is a promising head coach, and a Hayward reunion would ease the transition to the ranks of professional basketball. The same can be said for dealing Rondo, whose talent is occasionally matched by his willingness to challenge authority.
During a rebuild, I'd rather not mix a first-year head coach with a player notorious for being tough to handle.
As for the Jazz, this move makes sense for them because they land a guaranteed All-Star. Burke has potential, but plenty of high-upside 1-guards have flopped once they leave the collegiate level.
Rondo would be a great fit for the rest of the young roster, and he'd help speed along their improvement.