Merlin: Arthur Didn't Die

What would have happened if Prince Arthur killed Mordred before he could strike Arthur with his sword? Would Merlin's secret still be revealed or would everything carry on a normal with Merlin hiding his talents?

Love will be found and lost along the way, friendship will make and brake. But who will make the sacrifice to save the one they love?

What do you think? Should I carry on with this??

Disclaimer: All rights belong to the legends and the bbc, only the story line is mine.