When you click on New in the weapon scheme editor, a new scheme is created with the same values from the “Default” scheme.
I think that this is not really useful because you can achieve the same by selecting Default and then pressing the Copy button.

Therefore, I suggest for all weapons to set these values when the user clicked on New:

• Initial ammo: 0
• Crate probability: 0
• Crate content: Same as in Default, but always at least 1
• Delay: 0

This is very bare-bones, but great to create new schemes from scratch.