When creating content with new term, show all term fields for input also
You can use combination of two modules. First is Entity Reference, where you have to create your taxonomy term reference field. Then install module Inline Entity Form and use widget Inline entity form - Multiple values (in number of values of this field select: 1). 

In node create form you will have then field, where you can select from existing terms (autocomplete) and also you will be able to create new term, if term does no exists - this will create inline form, which would have all fields specified in taxonomy vocabulary structure (see image below).


If you select existing term, or create new, it will looks like this: