I think juve right now are a bit dependent on these key players because all of them (Alex, Neddy, Davids, Thuram) are in great form right now. In their absence, juve ends up with a mediocre performance. This dependence is not directly caused by these key players but the gaps created from their absence. To be fair, Alex, Neddy, Davids & Thuram may admit that performing would be harder without the contribution of their teammates.
In other words, the relationship of their form is directly proportional. If Alex is absent, juve would lose attacking flare. Therefore, they would have a mdeiocre performance. If Neddy was absent, Alex would have a harder time recieving the ball. If Thuram was absent, alex and neddy would lack the license to move forward because they would have to help out in defense. The team performance is a collective one. Split it down and you get individual performances. Lippi has done a great job integrating these individual performances into one collective team perfromance. And it is this team performance that usually is the reason why we win championships. Though we cannot deny that there are games when we've won because of great performances from individual players.
Did you notice that there are games that we do not perfomr well even if del piero, nedved or thuram is on the pitch?
You want to know why?
In my opinion, Juve needs more depth and more playing options. Like the one in Brescia or Lazio. I'm not quite sure which game it was but it was one of the games that we lost in Serie A this season. Nedved and Del Piero were shut down because Juve's attacks became predictable. What happened to our attack on the other side (Camoranesi and Di Vaio). Our players may have talents and may strike fear in the opponents but once it becomes repeatetive, opponents will figure out a way to stop our players like Nedved, Camoranesi, and yess, even Del Piero.
That's true .. Arsenal struggle without Viera .. he's the hub of the team .. but as I was writing the list in a hurry, I'm sure I missed a few names from each team Arsenal also depend on Henry to score the crucial goals that gets them the points .. So both, Viera and Henry, are important to the Gunners
You've got that right. He's our most important player. He's the captain, the inspiration, and without him the whole team plays badly. But the other player we depend the most on is Nedved. He is our playmaker and without him there's no one to push forward and pass the ball to the strikers.