I agree that we need Midna back, but I have to disagree with you on the last bit there. I actually quite like the ending even if she left, never to return. I'm just one of those people who likes endings that draw powerful emotions out of me whether its anger, happiness or sadness and that ending made me cry (no joke) pretty damn hard so I love it.
I'm actually rather happy with the end of the game. My opinions and views on it have changed since I drew this and I find myself actually loving the end even though it is incredibly sad. Mostly because it made me cry, and I just happen to be one of those people who loves stories, games or movies that make me feel intense emotions of any kind ; But I do wish midna would make a reappearance I miss her :C