The rebuild started on May 4. Have some patience. Plugging in UFA vets and making big trades (using what assets!?) would just make the Devils into the post-lockout Leafs. High payroll but very average and unlikely to make the playoffs nor flame out and get better odds at getting elite talent in the draft.
The next year will suck if you like winning, seeing the Devils being competitive and in the playoffs.. Probably the year after as well. Maybe by Year 3 they'll be a bubble team or make the dance. But it'll take a while.