For example, would the following sentence with either ‘rather’ or ‘instead’ included in the middle (or, for that matter, with ‘instead’ alone at the end) be redundant. If a redundancy, would it rise (sink?) to the unacceptable variety?:
"You would ask him about the economy, whereas/although/while I would (rather/instead) ask him about the war."
Also, would it make any difference (re redundancy) if the main and subordinate clauses were reversed and the contrasting adverb was in the main clause instead of the subordinate one? "Although/while you would ask him about the economy, I would (rather/instead) ask him about the war."