Sumpthing in my opinion was always an attractive robot, mainly for its ruggedness. Rather than the aim to win, you can tell Dig entered to make the show entertaining. It's just a shame he wasn't recognised as much as the Diotoir lads.
The robot itself, had the unique scrappy look which seemed like it came straight out of a movie, and Dig himself had a brilliant personality. If the show returns then it would be great to see him return too, his Jonny Depp/Russell brand/Matthew Lillard style persona when on air I think would reel in a good amount of viewers. He was one of the few people who went onto the show to make it interesting rather than win.
If the show returns it will need more characters like that to come on to make the show better rather than good robots.