The final roster spot typically comes down to a matter of preference, and as such, I'm calling this a split decision. Team USA typically doesn't like overloading its roster with bigs, and with Anthony Davis, Kevin Love, LeBron James, Blake Griffin and DeMarcus Cousins already selected, that likely means the inclusion of another perimeter player.
One option is Eric Gordon, currently of the New Orleans Hornets. Gordon was under serious consideration for the 2012 squad, only to be nudged out by the inclusions of James Harden and Andre Iguodala. Team USA circa 2016 should be a bit less crowded on the wings, and Gordon—a nice curling shooter and physical (if undersized) defender—has a legitimate shot of making the final cut.
Denver's Ty Lawson, an under-the-radar Team USA natural, could be another great fit for international play. Lawson is one of the fastest end-to-end players on the planet, a skilled outside shooter and another fantastic facilitator of the offense to add to the USA Basketball stable. He could play either alongside another nominal point guard or in place of them should injury strike, and really, with your 12th roster spot, those are the kinds of possibilities you're planning for.
Lawson has improved dramatically in each of his first three NBA seasons, and while it's certainly debatable whether he'll wind up being an All-Star-level talent, I'm firmly in the Lawson camp. His physical gifts are charismatic all on their own, but it's Lawson's feel for the game that could fit in nicely with the Team USA crop.
Then again, if John Wall rounds out his game, he could make even entertaining the option of including Lawson seem silly. Wall is a tremendously gifted player who hasn't been given a fair shake as of yet, and as such, it's difficult to determine what he's truly capable of. Each bit of stagnation or regression can partially be explained by the Wizards' miserable supporting cast, and with the season to come being Washington's first stab at building a decent roster, we may soon have a better idea of how equipped Wall is to vie for a spot on Team USA.
Michael Kidd-Gilchrist deserves some consideration on the same grounds that merited Paul George's "selection," though obviously, his place in this conversation is a bit more hypothetical given his lack of NBA experience and underdeveloped shooting touch. Perhaps I'm just higher on MKG than most, but in four years' time, I think he could prove to be a tremendous defender and a useful—if unconventional—offensive talent.
But obviously, this last spot encourages plenty of debate. Who would you consider? LaMarcus Aldridge? Greg Monroe? Bradley Beal? There are plenty of options and so many valid alternatives. It just depends on how you see this team forming and, just as importantly, how you see the development of certain players panning out over the next four years.