There's 'The Life and Times of Severus Snape' which is a very clever fanfic. It delves deep into Snape's backstory, filling in the gaps left by the original books. The author has clearly thought long and hard about how to make Snape's journey more complete and it's a great read for any Potter fan. It's full of twists and turns that keep you hooked from start to finish.
One great 'clever' Harry Potter fanfiction is 'The Changeling' which offers a really unique take on the wizarding world. It has complex character development and a very engaging plot that plays with the established rules of the Potterverse in a smart way.
Chapter 118, ", Just Crush the Bones and Scatter the Ashes", is the clearest early answer because it turns Lys Nun Association's situation into a concrete plot event. The setup is No problem, leave it to me," Gu Hang assured Commander Matins,..., but the pressure keeps building through no, even further away—you can have whatever or whoever you want....
Chapter 273, ", Sun Lord (6k additional)", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The chapter gives readers a real answer by opening on Now, Gu Hang has exposed a scandal about Blackbird Heavy Industries... and ending on This was a legal rationale that could stand up..
Chapter 315, ", Power Armor Technology", is the clearest early answer because it turns Alliance's situation into a concrete plot event. The setup is After completing the army construction, including the Phoenix Battle..., but the pressure keeps building through In fact, regarding the military, Gu Hang had another minor expense..
Chapter 266, ", Army Establishment, Rage Bear Legion", is the clearest early answer because it turns Rage Owl Star's situation into a concrete plot event. The chapter gives readers a real answer by opening on Gu Hang currently has a total of over 17,000 grace points at his... and ending on If an official order came through sending them off to fight....
Chapter 192, ", Heavenly Gene", is the clearest early answer because it turns Lacroix's situation into a concrete plot event. Early on, He once again lamented in his heart, he really shouldn't have let.... By the end, Even after being elevated to the T3 level, their physical fitness had....
Chapter 291, ", The Visitor from Beyond", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The chapter turns that into something concrete by moving from When will the Dragonhawk Third Legion arrive? to Transporting a million troops isn't easy..
Chapter 175, ", "Central Blossom" Army Corps", is the clearest early answer because it turns Alliance Army's situation into a concrete plot event. The chapter turns that into something concrete by moving from Everyone went their separate ways here, each looking for their own... to And he, with the unit that reclaimed the title of Beast Slaughter....
Chapter 321, ", Spiritual Energy Transmission", is the clearest early answer because it turns Spiritual Energy Transmission's situation into a concrete plot event. Early on, Not having to fight is a good thing.. By the end, Subsequently, she was notified by the newly established Psychic....
Chapter 210, "Sweeping Across the Eastern Provinces", is the clearest early answer because it turns Alliance's situation into a concrete plot event. The chapter gives readers a real answer by opening on For instance, they began to gradually accept the "advisory" influence... and ending on Latterly, Yan Fangxu simply made a summary-style military report....
Chapter 174, ", Loyal Heir Academy", is the clearest early answer because it turns Rage Owl Star's situation into a concrete plot event. It opens with Gu Hang simply picked a few random classes and went in to listen to... and closes on Only his most progressive wife managed to maintain high spirits, and....