First, I applaud the creators/writers of Switched at Birth for bringing common Deaf issues into the mainstream light. Most people never think about any of these things. People mumbling, taking too fast, turning away while talking, talking behind someone, "curing" Deaf with CI, the troubles of mainstreaming, etc.
One problem I have with the show is Daphne's amazing ability to lipread with what appears to be 100% accuracy. While it probably wouldn't make for great TV to have people repeating everything 3-4 times, we probably don't want to further perpetuate the myth that most Deaf/HoH can lipread with any great amount of success.