Sasuke, Shino, Shikamaru*
Sasuke: Putting his post-war mindset aside, he could have replaced just about any Kage. A Rinnegan/EMS combo, intelligence and contacts in the underworld would pretty much make him a dangerous Kage
Shino: Come on... it's Shino. Yeah sure, he doesn't communicate much and would be more suited as an ANBU Black Ops Captain but Shino as a Kage doesn't seem that far off. He's got intelligence, really crafty (and deadly) techniques and.. IT'S SHINO.
Shikamaru: Smartest of the K11. Although his chakra reserves are next to shit, he can be one of the most resourceful Kage replacement there is. As long as he agrees to either Naruto/Temari being his personal assistant/advisor he'll be fine in terms of protection/battle support.
Analysing the other suggested replacements:
Hinata: She doesn't have full mastery of GF yet and even in battle she's still a little too... soft compared to how we saw other previous female Kage fought. Sure, her GF would be kind of dangerous but iirc nearly all Kage up to this point have long range attack abilities that can deal a reasonable amount of damage while she still has that 8 Trigrams Air Palm.
Sakura: She's basically a 2nd Tsunade and having been tutored by the 6th Hokage himself since she was a child, I wouldn't rule out her as a replacement either. Her skills as a ninja include mastery of Mitotic (I hope I spelled that right) regeneration, medical ninjutsu and chakra enhanced strength. Oh, and she's younger than Tsunade so she has an extra supply of chakra readily available to just about make cartographer (map makers) redraw maps due to destroyed terrain.
Lee: 8 Inner Gates. Get rekt. He'd be a fine Kage replacement since he's seen what the 8th gate can do so I doubt he'll try to go beyond the 7th gate unless an enemy greater than Madara/Kaguya appears. Other than strength? Basic ninja, basically like Konohmaru and a little too energetic with that youth BS.