What you say, and how you envision it is fine, however, playing with the cube is not an easy thing to do..in terms of management. There's an art in handling the cube and winning gamblers send the cube well before "significant leads" But I do agree that playing with the cube would attract much more attention to certain matches at certain times.Hi Keith, No, you've got it right.
My sense of the use of the cube is that from game to game the cube will be offered quickly but rarely accepted. This will speed up games considerably and therefore matches.
Once a player has a significant lead in a game with a neutral table position the cube will be offered and in most cases will be declined. Games will fly by. Very few games will reach the stage where the score is close and the balls are up table an out of play. When that rare instance occurs when the cube is accepted, two or possibly four games will have been completed in the time it takes to play a single game! Can you imagine the flock of spectators converging on that table when they discover a single game now has the value of four games?