I agree with the suggestion that it's time to start thinking of Life after Lou. The guy's in his 70's, and I think 2 more years (3 at the absolute max) is all he's really looking for.
Regarding the goaltending situation however.. I fork ZERO blame on Lamoriello.
Marty has missed nearly 80 games due to injury since 2009, and his paying for the 15 years where he played 75+ games a season. He's breaking down like a 40 year old goalie playing over 1,200 games would.. and Lou locked up Johan to play alongside him with the best intentions that the previous 2 season worth of track-record would repeat itself. -and why wouldn't it? Moose has nearly 40 victories since becoming a Devil. He's been the best backup\co-starter goalie a Devils fan could ask for. Better than Vanbiesbrouck, better than Weekes, and yes.. even better than Clemmensen.
Lou and Marty aren't going to be around forever...we've all known it for years, but it's getting close. This era we were all lucky enough to be part of for so long is soon going to be referred to in the past tense.
Re: Marty, who knows if he's paying for having played all of those games? No goalie never made it as far as Marty did even BEFORE he started getting hurt, so there's really no other case study, as far as knowing how an almost 41-year-old goalie with 1204 regular season GP should break down. He was at 1034 GP going into the '08-'09 season (the first where he missed significant time to due to injury), and 99% of that time, he was completely healthy, which is a major feat in of itself. Patrick Roy, at 1029 GP, is the only other goalie to play over 1000 regular season games. If he was at, say, 850-900 GP heading into the '08-'09, would it have really made much difference? Especially since it can be argued that he had a lot of rest in 2004-05? What's amazing is that, in 11 out of 12 seasons (from '96-'97 to '07), Marty played in 70+ games every year (in the one year he didn't, he started 67), and from what I remember, got hurt briefly at the beginning of the '05-'06 season when he tweaked his knee, yet still played in 73 games that season. Like Tri has pointed out, the last few seasons have been a mixed bag...there's been times where he's almost looked old and finished, but was able to bounce back and turn in respectable-to-pretty good numbers.
As for his backups, let's face it...for the most part, the only time any of them really got a typical backup's chance to play (or more) is when Marty got hurt, though when Hedberg came aboard, it seemed like the Devils were finally fighting the urge to start Marty his typical 70+. I think even now Marty would probably still want to start 70+ if he thought he could handle it, which is part of what makes players like him what they are. They never stop believing in themselves...I am sure that some goalies who started last season the way Marty did (.894 save% thru the end of January) might have hung 'em up, either in-season or at year's end.