Why isn't there a separate CapsLock layer of the Windows keyboard layout for the number strip?

Question

Keyboard layout

With the help of microsoft keyboard layout creator, you can create your own layout not only with overloaded 3 and 4 layers `AltGr` and `AltGr` + `Shift` for all keys in the letter block (including numeric keys), but also overload `CapsLock` (only for letters ), for example:
`b` = `b`
`Shift` + `b` = `B`
`AltGr` + `b` = `«`
`AltGr` +`Shift`+ `b` = `„`
`CapsLock `, `b` = `,`
`CapsLock `, `Shift` + `b` = `<`
Thus:

буква ≠ Shift + буква ≠ CapsLock, буква ≠ CapsLock, Shift + буква

Questions:
1) Why, however, is this not true for number keys above letters, for which:
цифра = CapsLock, цифра?
2) How does NumPad fit into all this AltGr stuff? Is it possible to disable the input of characters by Alt-code, and also overload these keys on the 3rd and 4th layer with AltGr ?
PS I have no desire to reload Caps Lock to the English layout.
The question arose because it would be nice to overload the numbers on the superscript and subscript:
CapsLock, 7 = ₇
CapsLock, Shift + 7 = ⁷ and the rest.
But AltGr is already taken by me.

Answer 1

The described problem is relevant only in microsoft keyboard layout creator.
In KdbEdit , you can easily bind X₌₁₂₃₄₅₆₇₈₉₀₊₋ X⁼¹²³⁴⁵⁶⁷⁸⁹⁰⁺⁻ to CapsLock.
https://yalov.github.io/yarbur/