Once again, the US Mint is going to try a new dollar coin. They hope for better acceptance than in their previous attempts.
It won't happen. The only way get a dollar coin accepted is to stop printing dollar bills. Do that, and it will be accepted. Not without a lot of howling, but it will be accepted. There will be no alternative.
And for a change, the government would have used it's coercive force to accomplish something positive.