Should Sbas Be Left In Circulation If We Ax The $1 Bill?

Okay, here's my solution...
1. US Mint picks out SBAs from circulation.
2. US Mint makes SBA-shaped rings that say something like "UNITED STATES OF AMERICA, LIBERTY, FREEDOM, SECOND AMENDMENT RIGHTS, ETC." and have a dead president (preferably more than one) on them.
3. US Mint mints the SBAs into the rings and stamps a "TWO" over the "ONE" on the SBA.
4. US Mint makes massive profits over collectors trying to collect all possible SBA date/new date combinations (like Spanish pesetas).

From what I can see the dollar coin in the US has NEVER been utilised to it's full extent.
You only have to look at the condition of the Morgan and Peace dollars available to see that they were not circulated much.
The Ike's and the new SBA type coins are pretty much in the same boat.
If the Dollar note was made redundant I would imagine the Dollar coins would finally get used simply because there would be no other way to make change.

The changeover from Stirling to decimal went rather smoothly in Aus.
3 coin sizes were retained 5,10 and 20 cent replacing the 6d,1/- and the florin.
A new coin was created the 50 cents.
we had 1 and 2 cent coins but these were demonetised in the 90's .
When the 1 and 2 dollar notes ceased to be made (old ones are still legal tender) 2 new coins were created the 1 and 2 dollars.
These 1 and 2 dollar coins are probably the MOST used coins here in Aus.