The staff at Hockey's Future has recently ranked each NHL team's prospect organization from best to worst. They ranked St. Louis as having the best system, with LA and Columbus coming in second and third, respectively. Here's where 11-20 is slotted in, but the people at HF don't really rate the Devils' system. They stuck the Devils' organization in dead last.
They cite that there aren't any prospects beyond Nicklas Bergfors and Mattias Tedenby that could become top-six forwards. Nor do the Devils have a solid goaltending prospect in the system. They do note that the Devils are stocked with various defenders (e.g. Matt Corrente, Anssi Salmela, Brandon Burlon) and checking forwards (Mike Hoeffel, Matt Halischuk). Yet, the lack of potential top-end talent and a goalie have caused them to rate the team so low. These are all valid points. But I wouldn't fret if I were a Devils fan if only for the simple fact that the Devils have been able to call up various players from Lowell this season, as we have seen when numerous Devils were injured in late October and November, and have them (and the team) play well enough at times. Some of these guys (Salmela, Vrana, Bergfors) have what you could call "game" and they'll be up in the NHL eventually. I don't think it's fair to say that the proverbial cupboard is bare, it's just not well-stocked.
Fortunately, the Cup is won with players already playing, not prospects. What's more, with continued drafting of some good players along with the proper development, the Devils will have some of these guys ready to step in the NHL in the future and they can fill other needs via other ways (e.g. free agent prospects, NHL free agency, trades).
Continuing the prospect thoughts, Hockey's Future has a feature article on the Devils' third round selection in 2008, Corbin McPherson at Colgate University. The article focuses on how he figured Lou and David would pick him in the draft and his transition from Canadian Junior A hockey to the college game in the ECAC. It's a big challenge and it's a big adjustment. According to his player profile at College Hockey News, McPherson has 2 assists and 22 penalty minutes in 14 games this season. Since I haven't seen him play, I don't know whether he's doing well or not. But if someone at HF is doing an article about him, he should be doing something right.