If I were KING... I would revamp the money in your pocket.

Pennies GONE
Dollar bills, and 5 dollar bills gone. Smallest paper bill is ten. Dime, nickle and quarter all downsized 20%
Dollar coin, 2 dollar coin and 5 dollar coin are re-introduced but changed.
Dollar coin size of a penny but thicker and copper. 2 dollar coin slightly larger (10%) size but with a rough face and two tone (Silver and Gold color) 5 dollar coin about the size of a nickle but thicker and gold in color. All coins to be tactily able to be differentiated in your pocket.

Probably why I am not king.