True about the film being underrated although I think Princess Tiana has a pretty good presence in Disneyland with the finale of the Magical Map, a major parade float, and a meet and greet. I am surprised that Disney hasn't taken advantage of a very easy tie-in by creating a Tiana's Place restaurants in New Orleans Square in Disneyland and at Port Orleans French Quarter at WDW, kind of seems like a no brainer.
In comparison to Frozen, The Princess and the Frog doesn't have much.