[ProllyInfamous]

Yes, and reduce the size of new_half_dollar to current_quarter; new_quarter to current_nickel; dime remains same size. Nix nickels and pennies. Dollars become smaller than current_half_dollar, but larger than current_quarter.

[euroderf]

If you reuse currrent form factors for larger denominations, people will exploit it.

[ProllyInfamous]

I agree — tangentally Gresham's Law [0]

>"Bad money drives out good."

Perhaps reduce denominations to bespoke sizes — but just make them smaller [2].

[0] <https://en.wikipedia.org/wiki/Gresham%27s_law>

[2] I am among the few people who actively uses half dollar coins — they're simply too bulky for most people (I'm a fatguy so I've got enough pocketspace).