Re-reading your reply I think there may be a misunderstanding with my question that I did not make clear. If I understood correctly then to divide a Safecoin it will be necessary to exchange it for something else entirely, and once “divided” cannot be reformed - two halves will not make a whole. So really we would not be dividing a Safcoin we would be trading it for more of something else that is worth less.
My concerns on complexity, usability and familiaraity are about this “trading not dividing” idea and my question, to boil it down, is what is wrong with the straight forward simple method? To use the bitcoin example on the Safe Network then there would be 2.1 quadrillion “signed structure data objects” as the lowest unit of account (the “Satoshi”) and the standard “Bitcoin” is just a multiple of that, 100Million. Under that regime all divisions and multiples of a Safecoin require no extra tokens, exchange or trading mechanisms and two halves will make a whole so familiarity/usability are preserved. The answer you gave me appears to be about what you actually call those divisions and multiples, sorry about that.