Hello, thanks for your suggestion
Unfortunately, this method of tag assignment is open for abuse and therefore wont be implemented at this stage. Commands assigning tags is easily monitored and they can be transferred to the relevant sheets. Having automated role assignments actually has more background admin work assigned to it to ensure all entered details are correct, and furthermore, the editing of any mistakes.
With this being said, i will be declining your suggestion; but it could be considered in the future should the need arise (with the right processes in place).
Thanks