It used to be done that way. Bolivar never got out of posts 5,
6 and 7, while others earned nicknames like "Captain America"
and "Flag Man" for their affinity for the Red, White & Blue.
It's harder to win from the high posts (except 8), so, putting the better players there increases the win probability of those numbers and reduces the glut of 1s and 2s. It also improves the payoffs on the lower-numbered combos, though the 1- and 2-backers cash fewer tickets. More of a test of handicapping skills, IMHO.
Who thinks we've had enough of "fair play" and wants to go back to how it was?