The list should be about the greatest stand-ups..ever.
Therefore, in my opinion, you shouldn't see much change in the top of the list, year on year. Newer comics breaking into the lower half of the list, established comics moving nearer the top as their popularity grows..that's how it should look.
Too many people vote for the comic who made them laugh recently, it should be about their career and how important they were to the comedy genre in their prime.
Billy Connolly certainly deserves his place at, or near, the top. He managed to take his act successfully around most of the English speaking world, not many other British comics have managed that. Of course, there is now Eddie Izzard, who has gone even further and done his act in French and German !