What I'd like to see managing expectations towards the new product well before anything started, considering resource (time, money, workforce, etc.) limitations

What I'd like to see managing expectations towards the new product well before anything started, considering resource (time, money, workforce, etc.) limitations. And not going for the shiny things do not fit! Because limitations are everywhere. Ok, software engineers like to pride themselves in the ability to do anything and everything (not as much as salesguys of course) but this stems from the ninja attitude towards technology and forgetting other dimensions of reality. Should only attempt managable goals on all necessary levels. I am still waiting for place where this is achieved...