We've been waiting for kids to take the next step for years. Klesla, Zherdev, Picard, Brule, Brassard, Jake, Moore, Erixon..etc..Now that's again a doomsday look and I really do think it will be different for some of the kids on the team now (Bjorkstrand, Wennberg, Jenner) and if ALL of the kids develop then we should be in great shape. However, that's just not likely.
I've been a fan of a lot of bad clubs, long before the Jackets existed. For whatever reason, my teams are usually rebuilding, and I've seen the drill. Not all rebuilds work. Some do, some don't, and there are reasons why. It's not just a matter of "get some kids to get excited about and roll the dice". Here's the main things that separate the rebuilds that work from the ones that don't:
1. More than a few. It takes more than just a few good young players to make a successful rebuild. You need a lot of them, or a couple great ones. That's why I'm not as confident in the Leafs rebuild. They have 3 young F's and 1 good young D on the roster. That's it, and in my experience it's not enough. They have no one else on the roster or system who is A) under 24 (of an age where they can be expected to improve) and B) can be a difference maker (has serious first line / top pair upside).
A bit ago, I went through Jackets history and looked at the failed rebuilds, those times when we thought the youth would pull through and it just wasn't enough. I found that we never had more than a few U24 difference makers at any given time. 2009 was maybe the high-water mark for optimism and there were a grand total of four (Voracek, Brassard, Filatov, Mason). Compare that to today (Saad, Wennberg, Jenner, Jones, Murray, Bjorkstrand, Werenski, Dubois). It might not work but you can't say "same old same old".
2. Defense. I would have said "positional balance" instead of defense, but you can have a crap offense and still vastly improve if the D develops (see Nashville for many years), and you can't say the same about a crap defense with great F's (Edmonton, for many years). Everything hinges on how Jones, Murray, and Werenski develop. Things are far from certain, but I can say this is the first time the Jackets have ever tried a rebuild with the correct approach.