Since 1-4tdis would be equal to 1-4ndis, it makes no sense that these primitives exceed 1-4 of a circle. In case you need it, use a normal ndis and tdis for the remaining part.
As for the 48-sided versions, they are useful because they save some lines of code and neighboring but not coincident points for rounding.
In the meantime it occurred to me that the complementary part could already be foreseen (with a lot of imagination I indicated it as tdis2); even if these are already obtainable now with the ndis and adding a triangle would only reduce the number of lines and the possibilities of error.
As for the 48-sided versions, they are useful because they save some lines of code and neighboring but not coincident points for rounding.
In the meantime it occurred to me that the complementary part could already be foreseen (with a lot of imagination I indicated it as tdis2); even if these are already obtainable now with the ndis and adding a triangle would only reduce the number of lines and the possibilities of error.