I know I'm in the minority on this one, but I don't think there is much risk of a work stoppage this time. The first time we had a work stoppage, it was to introduce the cap, which was a massive blow to the NHLPA. The second time, it was not a whole lost season, and that one involved getting the players getting a far smaller percentage of earnings than before.
The league's basically won and won completely already. The league has already given offers to the NHLPA to extend the existing deal (if I recall, it was to allow players to go to the olympics). Perhaps the NHLPA has some gripes this time, but I genuinely believe that the league is far more willing to have a work stoppage than the players are. The players might demand some re-jiggering of the esgrow system but that problem is not so dramatic that it would nix a season.
But hey, that's not a guarantee. But, I wouldn't be surprised if the CBA would be renegotiated as part of Seattle expansion deal. The NHLPA enjoys having more teams in the league so it's a compelling strategy.