My Take On New American Coin Designs!

The USA once had so many varieties in its coinage, particularly in the late 19th century, so this is my idea of redesigning the current coinage.
1. Ditch the penny
2. The nickel retains the same size and shape, but it will have Lady liberty (similar to the one in Mercury dime, but without wings) on the obverse and the classic buffalo on the reverse.
3. The dime has the seated liberty on the obverse like in this pattern coin https://sep.yimg.com/ca/I/uspatterns_2270_36665103 , I'd prefer the breast to be exposed tho! the reverse depicts the Liberty Bell.
4. The quarter depicts an Indigenous face, but this time an actual person, Sitting Bull on the obverse. https://en.wikipedia.org/wiki/Sitting_Bull, the reverse shows a grizzly bear, similar to the one in Canadian coin.
5. The Half dollar portrays Martin Luther King, Jr. on the obverse with a flying bald eagle holding an olive branch on the reverse.
Before going into dollar coins, it is assumed that the production of the one-dollar bill has been ceased.
6. The one-dollar coin will have the shape and size of an Australian 50 cent coin (slightly bigger than the half dollar, but not as big as ikes), portraying standing liberty, similar to the US administered Philippines peso https://en.numista.com/catalogue/pieces4634.html and a full seated portrait of Abraham Lincoln on the reverse https://farm8.staticflickr.com/7312...28d50a_k.jpg
7. A bimetallic $2 coin the size of half dollar, featuring Morgan on the obverse with the image of George Washington crossing the Delaware River on the reverse.