and b) if they had actually given Arthur a chance to build his kingdom...I mean if he dies now, what basis would the legend have?

I know, they took the Arthurian legends and rendered them utterly pointless. Arthur isn`t some legendary king and Merlin isn`t some legendary sorcerer either. There are just a lot of prophecies and magical dipshits who claim they will be at some unspecified time in the future.

Now it`s increasingly clear that future is not going to happen so the entire show was pointless. Argh.