If McKay is an out-and-out goal-kicking speedster, Nareki a freakish finisher and Koroi an electric playmaking option, then Collins brings solidity, maturity, experience and highly-valued communication skills of which Umaga lauded during his time as Blues head coach.
Solidity in that he has bricks for hands.
Maturity in that having him in your side gets old fast.
Experience of being mediocre.
And that highly-valued communication that keeps the score board ticking over and comes up with the big plays.