I associate size with strength. A player 5'-11" can be just as strong as a 6'-3" player.
Sure, you can build your team full of Mete and Reilly types where you value speed. I'm going after mobility, playing smart, and reliability... like Juulsen types. Look at the Jets, Preds, Ducks, Kings, Caps, Blues, Sharks, Wild, Bruins, Lighting who have typically been some of the best defensive teams in 3 or 4 seasons now. They have a defense built on their ability to shut down, play smart, good mobility, and are very strong in terms on strength/size.
Reilly: Spare part from another team
Benn: Spare part from another team
Schlemko: Spare part from another team
Alzner: Spare part from another team (Caps moved on from him for valid reasons)
Each one of these guys are players we picked up from teams that let them go. Think about why? Reasons are different in each case. Right now, we have 3 of these guys in our top 4D. Add Mete who is our own draft pick and our shutdown ability is terrible. Price is being exposed.
Reilly is the only piece I value in those 4 cause I do think his speed and vision is decent. But boy, he is not good in his own end. Might be a good fit to pair up with Weber.