a suggestion that should be rather easy to implement but makes a lot of convenience:
in the "sequence" part, add a type "list" that allows just input of numbers to convert. basically decimal input should be sufficient.
thx for the tool as always, and hope this will happen!
For the General Mixed Base Section, Can you add a “Repeat Section” Option?, So i don't have to type repeatedly the same pattern of a specific mixed base over and over again for the higher values.