It wasn't perfect, and it did have some major plot flaws. But it was still a great show to watch for the past year. If only for the sheer brilliance of Otoya Kurenai.
I also think what really set Kiva apart from other Kamen Rider series I've seen was the ending.
- Taiga somehow managed to botch killing Maya with his Jacorder.
- Nago magically got his eyesight back and married Megumi?!
- Wataru got an unexpected visit from his future son, Masao Kurenai.
- And a new Fangire threat from the future appeared out of nowhere.