The Miami Dolphins have put themselves in a position to assemble an elite roster and they did it by using high draft picks on high-value (premium) positions. Positional value is one of my favorite topics to discuss within the game of football. The idea is that certain positions have a larger effect on the outcome of a game... which is why those positions receive a larger paycheck on average.
When competing in a sport (like the NFL) that uses a salary cap, spending your money wisely is foundational to sustained success. One of the best ways to save cap room is by drafting these high-value positions, especially early in the draft when you are more likely to “hit” on your pick.