I am searching for a word to describe people who are very competent to the extent that an entire nation can depend on them.
I understood that my country needs ____ economists just like a human needs oxygen.
I want to imply that these types of economists are highly needed because they can take an entire country into progress, and because they are extremely capable and skilled. Also, I want to use a more sophisticated, literary word that would add artfulness to my writing. Any suggestions?
Also, I know that some people will strongly object it, but I will try, anyways. Can anyone suggest me a better analogy for the second part of my sentence (like...oxygen)?