There are a few more things the NHL could receive in this new offer:
The NHL proposal also includes four-year deals on entry-level contracts, unrestricted free agency for players at age 28 or eight years of NHL service, a five-year limit on non-entry level contracts and revenue sharing at or near $200 million.
http://www.tsn.ca/nhl/story/?id=407490
So an extra year to entry level contracts...an extra year before a player reaches UFA status, and a 5-year max on all non-entry level deals.
Granted, the players will like the no-salary rollback part, but that 5-year max may still be a point of contention...
In the end, the NHL had to do something after the PR "scandal" this past weekend. They're asking for a lot less in this offer and the ball is in the players' court.