Shikamaru Would Never be Hokage
The title explains itself.
1. Shikamaru's dad, who is stronger AND smarter than him, was never offered the position of hokage.
2. Shikamaru's too lazy to take an IQ test, he'd never be up to the amount of paperwork that comes with the hokage job.
3. While Shikamaru has the will of fire, he doesn't have the sitck-to-it-ness to follow through on it. Unless he's motivated by revenge >.< (see the fight with hidan)
4. Shikamaru's not strong enough. The only reason Shikamaru managed to beat Hidan was because Hidan was a dumbass. He'd never stand a chance against any other akatsuki member.