While I agree, we really should have someone in there who can offer more and not force so many minutes out of our top players every night. Neil deserves to play but not every night. He should get 40%ish of the games off so someone else can play more minutes. Keep his old body fresh.
On the flip side, you want your top lines to play more, because they are better at scoring.
The third line is a shutdown line that will play more, and against some teams will line match.
This leaves the fourth line to provide energy when both teams are resting their other lines. In addition to energy, you want you fourth line to be solid defensively, and to be able to hit. With Dizzy on the fourth line we also have a fast strike option.
The reality is that from a financial stand point you want most of the money being spent on the top lines as well, team's don't really have money to fill the fourth line with 'paid players'.
Ours is perfect I think, so far, for the money being paid. We have an excellent defensive vet at centre who is good on faceoffs. We have a 1000 game vet tough guy on the right who can crush folks, and is effective in limited, traditional 4 line minutes, and we have the rookie winger on the left with speed to burn and the courage to drive the net. An affordable and effective fourth line.
The truth is that I'm not seeing a lot of holes in our team right now (not that we don't need to continue to work, but our players are solid in their positions 2 games in), and we have the cap space to add a serious upgrade somewhere in the line up. By Christmas and moving towards the deadline we'll have a solid idea going forward into the playoffs and next where this money should be spent. The most serious issue to consider though is that with the expansion draft looming any shiny acquisition will have to be protected, leaving someone else exposed. There is a good chance we make a small temp move after the new year, and then wait until Vegas has had their picks before making a big move. That goes for most teams as well I'd imagine, no one wants to give Vegas squat if they don't have to.