As an NAV I can speak only for myself.   If a candidate made this comment:  

"If Republicans focus on what government should be doing, which governments should be doing it, and how to do it effectively and efficiently, voters will listen and the Republican brand will become more appealing."

I would consider them seriously.    

It's a theme that I've tried to promote for about a decade now.   Any stable nation state has a strong government structure - no government is not an option.   But the US is a very large and diverse nation, and federal programs that don't acknowledge local input and control, will struggle.   Asking what level of government should address public concerns is a fair question and will lead to higher levels of commitment.      Funding is another topic, especially for local or state economies that have low resources.