Dollar coins will never widely circulate until paper dollars are withdrawn. Withdraw the paper ones and fives, eliminate cents and nickels, and everything balances out. It might even stimulate use of Halves again. Standard till becomes dimes, quarters, halves and dollars for coins; $10, $20 $50 and $100 for paper. Perhaps convert the half to a Five Dollar coin for dimes, quarters, dollars and five dollars.
Just a point of additional information regarding this. According to a release issued by Michael White, Mint spokesperson, the Director of the Mint has very little if anything to do with coinage design. The entire story is related in Coin World July 26 issue, page 36. The short of it is that the chief engraver, the contracting officer's technical representative, a tooling expert, the program office responsible for stakeholder relations, and mint lawyers, are the ones reviewing all coin designs submitted by the mint artists before they are ever even sent the the CFA and CCAC. In the entire process from beginning to end - Moy plays no part.
I have one better: Copy Canada. Eliminate $1 paper and go with a $1 coin, and $2 coin, like Canadas Loonies and Toonies. Keep the $5s.
Coin and currency design appreciation, like all design appreciation, is subjective. That said, I think the CCAC's latest attempt to 'improve' coin designs is misdirected; elaboration here http://bit.ly/cazyCF .