The n faces edit is confusing. The layout of the labels males it unclear as to what is wanted where.
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How many faces?
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Its unclear whether you want faces at the top or bottom. It is unclear as to what the other line means. In the input consider using placeholder for faces and No of Dice.
The other special is limited by only allowing a single digit. You cannot create d00 (which you need for games like CoC or Delta Green which use the tens for advantage) or d000. Some special dice have blank faces, which its unclear how to enter since tge list is space separated. Its fantastic that emoji can be entered. It would be nice to choose the shape of the special dice or for it to presume a shape based upon the size of the list.