I think if Doug does survive the tournament, he will become a capable fighter himself in the future rather than just being the computer guy. I mean how many can win against those other ten of Arakko?
I think that's the real purpose why Hickman chose Cypher as one of the ten because it makes no sense when there are more powerful sword-bearers around. I know it's supposed to be Saturnye who chose but the main story is written by Hickman.....