In an interview with Extra, Demi Lovato discusses the possibility of returning to another season of X-Factor, mentioning that she hasn’t been asked back but she would love to. She says, “I'm focusing on my music this year, so it's going to be a lot of touring, a lot of promoting of my album, but I would love to. Obviously, if they asked for me to come back, I'd say yes."
When discussing other people who could potentially replace Britney Spears as a judge, Lovato suggested Lady Gaga, saying, “I would love to see Lady Gaga. I don't know if that is possible or not."
While getting Lady Gaga as a judge would no doubt be a huge ratings boost for the show, it’s not likely to happen, especially after she had to cancel her Born This Way tour because of surgery. There are also rumors that most of the other current X Factor judges are going to get replaced next season, but if that’s the case, the producers should start meeting with potential replacements now.
Gaga would definitely make an interesting addition the show with her outspoken personality, but there are also other musicians who haven’t had a chance to be a judge on any reality show, who would also manage to do a good job in the role [Carrie Underwood, anyone?]. The third season of X Factor will be returning to television this fall.