Definitely agree that this is the ideal kind of movie to be in 3D. I haven't seen it in 2D, so I can't compare, but the post-conversion 3D really didn't do it for me. It wasn't too murky, it wasn't too dark, but it wasn't too impressive either. I think the botched 3D puke was the biggest offense.
If tickets were the same price either way, it wouldn't be an issue. But from what I've gathered, if tickets were the same price, 3D probably wouldn't exist outside of a select few releases every year.