We have maxed out our salary cap almost every year. We have spent on more balanced teams. We had Orpik, Michalek, Niskanen, Erhoff, Scuderi, and Martin along with Letang taking up big chunks of our cap space, and all of it on the back end. When we paid those guys a lot of money, we had a balanced cap, and how did that work out? We could have not made the trade, and then sign a bunch of bottom six players with the cap space like Shawn Matthias, Joel Ward, and Blake Comeau. Which of these would you pick?
Perron-Crosby-Hornqvist
Kunitz-Malkin-Plotnikov
Dupuis-Sutter-Ward
Spaling-Matthias-Comeau
or
Plotnikov-Malkin-Kessel
Perron-Crosby-Hornqvist
Kunitz-Sutter-Dupuis
Wilson-Sundqvist-Rust
The third line is pretty solid either way, and the fourth line is remarkably better in the first scenario. But having one of the top ten players in the league, right next to one of the top five players in the league on the top line, being able to bump the best center in the world to a second line, and bumping Kunitz to a third line role makes our top nine so much better.
Or, what would probably have been even more likely, ditch Ward from that last scenario, and instead they resign Martin. And in that scenario, we're still complaining about Kunitz in a top six role, with an aging Martin signed until he's 39 years old, so we're literally making the same mistake we made with Kunitz, Scuderi, and Dupuis all over again. The Kessel trade ensured that didn't happen.
Is balance really that good a thing? Make the team top heavy, force them to play young, cheap guys. It's literally the best thing for them right now.