I think Toph's going to get a more air time in the last half of season three. I don't think she'll be all but forgotten like she was the first half of the season. She has about as much air time as Katara in WAT and FBM. Doesn't she also make the rock soldiers Katara and Zuko are fighting in this picture?
Unfortunately, there won't be any Toph centered story lines this season. I really wish they would have developed her more, and I hope she's not this season's sacrifice (Yue was season one's, Aang was season two's.)