My worst move in CN was not to get a war chest once I reached 10k NS... I only started sledding for one after 15k NS bad, bad move. Fixed now, though XD
The best move was probably accepting my very first government role in my alliance good experience.
I think another "best" move, maybe running equal to my first best move, is letting Lanna chain me to the kitchen sink, never allowing me to leave TYR