Thad: I welcome the idea to play backgammon with different dices, but I wouldn't choose those ones. As playBunny pointed out, the fact that the sum of the two dices is the same as with ordinary dices is not very relevant in backgammon, and I don't like the fact that it would be impossible to full-prime the opponent (it would require 16 checkers).

I would welcome new dices such that
1) There are less doubles. This sounds nice.
2) There is a higher probability to hit a direct shot - which would favour the positional plays vs the racing plays.

A possibility would be one die ranging from 1 to 5, the other from 2 to 6. It would require some testing to tell how it would work.