User blog comment:Arthurlover7/Season 5 Episode 6 Trailer/@comment-5598897-20121104204106/@comment-4892425-20121104214806

Morgana's now getting around to it. As for Gwen "stealing" the crown from Morgana, it's just a case of Morgana refusing to face the fact that she was Uther's dirty little adulterous secret, making her ineligible for the crown. Since he refused to acknowledge her Morgana wants to take it out on the world and particularly anyone who committed an imagined offense against her. Morgana would have abused Mithian had Mithian married Arthur; 5x04 shows me that Morgana would have gone there. It begs the question - why would Morgana go after a consort? If Arthur dies Gwen (or Mithian or Elena or any other woman) would be queen dowager with no power to rule. (I know Annis still rules Carleon after Arthur killed her husband, but I'm thinking the succession laws could be different.) The only logical answer would be a consort's primary duty to the crown - producing an heir. Arthur's legitimate son or daughter would lawfully be Camelot's next monarch; any shot Morgana had for the throne would be gone for good. The queen dowager would become regent until the child reaches the age of majority. Nobody would support Morgana's arguments at that point.

There are two tracks of the Arthurian legends where Arthur and Guinevere were childless and they did have children. I think the writers didn't write in a baby Pendragon because the next step for Morgana is to plot to murder (or actually murder) the infant because he or she is a trueborn heir/heiress to the throne. Morgana's track record shows she would have no problem doing that, but it may be a bridge too far for a family show.