The light around a category that's just been chosen and the rotating Super Six don't bother me, but I don't like the sound effect that accompanies the light.
I like the multiple angles during the WC, but I'd rather they use the long view to establish how many are needed to win.
Since they went to the trouble of adding a scoreboard midway through Season 1, they should keep it in view at all times. In Round 6, the \"N to win\" is useful, but it would be better if they just showed the opponent's scoreboard in one of the corners. Optimally, if the team at left goes last, put the right team's scoreboard in the lower right and vice versa.
Of course, letting the contestant choose whether to give or receive in the WC is a huge improvement! (I always thought the 1980's Pyramid gave contestants too much freedom, while other game shows gave them too little.)