User blog comment:It's Good to be the Queen/"It's this what you wanted Morgana?"/@comment-5674726-20121127180111

I think that it's a plausible scenario.

If it's true that they planned for Season Five to be the last, they've been foreshadowing a grim end for Arthur and Camelot since the beginning of Series Four, at least, with Morgana's vision of the aftermath of the battle. We've been told that the seeds of Camelot's destruction are being sown, and that Arthur's Bane is himself. It is also likely that there will be serious repercussions to Arthur's decision not to made the necessary atonement to the Disir.

My guess would be that Mordred's life was never in danger, Arthur's choice whether or not to accept magic determined whether Mordred would live as his ally or as his eventual killer. I'd say that it's also possible that, had Arthur agreed to embrace the Old Religion, Morgana would have been instructed to cease her attempts to take over Camelot and, as High Priestess, she would have to know that she ignores those who speak for the Triple Goddess at her peril.

There's bound to be a serious consequence to Arthur's decision to reject the Disir's proposal. Something is going to happen that will turn Mordred against Arthur, something that wouldn't have happened had Arthur agreed to embrace the Old Religion. The trailer for the next episode suggests that Mordred will be left behind to face Morgana. If her affection for him leads her to let him go rather than trying to kill him, it will make him more likely to turn to her if his faith in Arthur is shattered.

The prophecy that Arthur will unite Albion could be one that's fulfilled in a manner that is very different to the way Merlin thinks it will. In the Star Wars prequel trilogy, Anakin Skywalker was supposed to bring balance to the Force and accomplished this by wiping out virtually all of the Jedi, and later the Sith. Maybe Arthur will unite Albion by calling on the other rulers to join him against Morgana, she retaliates and there's very little left of either side by the time they're done, leaving Albion vulnerable to invasion.

Morgana doesn't seem to have thought too far ahead in terms of her plans so, even if her side wins by a hair, the realisation that there's barely anything left of Camelot for her to claim could be the shock that helps her see past the anger and bitterness that's been eating away at her for years.

If they do go with having Morgana repent, I wonder if they'll have her bring Arthur to the Isle of the Blessed to rest until it's time for him to fulfil the "Future" part of his title, or if they'll have some kind of Deus Ex Mergana ending, with them combining their powers to help repair the damage or similar.