Air Gear was a manga that derailed when it stopped emphasizing the main story and character, and started dealing with back stories, and characters arcs left and right. Back when we focused on Ikki, we had funny hijinks, badass ideas, and just general awesomeness. Now we have unimpactful-world views, friendship is magic, and a million subplots. The ending, I feel solved many plot hole for the (now-central) side characters (I mean, how else was I going to find out that Onigiri is now married to Sarome, who is somehow not dead form having her neck twisted 180 degrees, and Kazu finally goes out with Emily) but it really lacks what we were looking for, like Ikki getting to ride with Simca, or where everyone goes from there, or even WHERE DID IKKI COME FROM. They never really cover the plot holes with his natural talent (jumping off Tokyo Tower), his relation to Dr. Minami, or why he needed to be adopted in the first place. If it wasn't for the newfound conspiracy theory about how mangakas are ending their mangas to send a message to the greedy publishers, I would say that Oh!Great could have done a lot better. Considering his time span though... well, at least it wasn't Negima's ending :)