Board Thread:Speculation House/@comment-3146930-20140708014442/@comment-24994749-20140714010441

Ok, I don't watch Korra... What about Aizen? Ignoring the Lost Agent and the Thousand Years Blood War Arcs which take part after Aizen's defeat. The Shinigami Agent, Soul Society and Arrancar Arc had Aizen as sole villain yet most Bleach fans agree that was the best part of Bleach and dropped after it because they didn't care about the new villains even if they have to do with the plot points that were left loose (I'm not one of those fans, but I come across them a lot).

We saw Aizen full fledged at the End of the Soul Society Arc, he did have a final Power Up at the end of the Arrancar Arc (during the Decide mini arc), but before that, the solution was to keep Ichigo on a power level under him (mind you, the dude was a monster in match with the Captain Commander) and have him and the other shinigami battle the mid-bosses of the Arrancar Army for the majority of the Arrancar Saga (Invasion of Karakura, Hueco Mundo and Battle for Fake Karakura) until Decide.