Of course there are two other factors that don't help:
a) Previous dollar coin designs have been ugly and filled with misguided feminism (I still don't know and don't care who Susan B Anthony was, and I only know Sacagawea from The Simpsons), and
b) Previous dollar coin designs have been damn near indistinguishable from quarters by feel. Make 'em bigger or thicker or give 'em flattened edges or a hole in the middle or something! Preferably all of the above so you can look at it and say "Wow, that sure looks like a dollar's worth!"
I remembered the dollar coin as George Washington, silvery, larger than all others. And quite uncommon, especially compared to the dollar bill. Still really not something you'd confuse with quarters. Has it changed that much?
And what are those feminism attempts you seem to refer to?