The D6 is the iconic chance-cube, the symbol of the randomness that give RPG's their spice. It's the one element of an RPG you can find ANYWHERE, and start up an RPG, or many other games for that matter. How can we eliminate such a symbol, an icon, a flagship of our entertainment?!?!
On the other hand, d20 has already had its icon and image immortalized forever through Wizards of the Coast; it really needs no more praise than what it has.
I entreat all fellow gamers to give the d6 the respect it deserves!