I love hot glass and the concept of the show is good. However, I really have some issues with judging. In season 3 particularly, Katherine Gray was obviously biased in judging. Does she have the final say?
This made season 3 hard to watch because toward the end she just ruined judging. Replace her and spend production time on making objects not false criticism.
Glass blowing is incredibly hard and even with assistants the show makes it look too easy.