I'm not in favor of such an offer sheet (I'm wary of trading our 1st rounder in either of the next two drafts. People I respect who know more about it than I do have said the next two years are stacked--next year with depth and the following with generational top end talent).
I wasn't a fan of the Lindros trade either, nor the Nash trade. You are correct in that these kinds of players are rarely available. When they are, it's because there is a problem. Concussion issues, locker-room issues, wanting out because they have spent YEARS in a losing culture, etc. My concern with the Nash trade was that he had no real post-season experience to speak of, and we (at that time) were a team ready to compete for the Cup. Players need to learn how to play in the post-season. The vast majority of players get progressively better over their first few playoffs. I honestly think that if we had Dubinsky and AA instead of Nash, we would have been more likely to win the Cup against LA. To be fair to Nash, if we had the Nash from two years later, that would be true as well. He got better in the playoffs each year, but our best chance coincided with his "ghost" year (ie: his first real experience with playoff hockey).
I think it is very difficult to add such players without drafting in the top 3. Until recently, we'd literally never done that.
As such, I would advocate for building the team around the two high end picks that we have. They happen to both be wingers. The team is also absurdly deep on defense. That's the team we have. The Cap is going to be tied up in Panarin, Laf, Kakko, Kravtsov and Kreider. It's going to be tied up in Fox, Trouba, Miller, and the incoming depth guys. We don't have the money for multiple high end centers. We need to find guys who can bring elements that are missing (defense, physicality, face-off skill) and who can distribute the puck to our stars on the wings. There's no other way around it unless we want to blow things up in order to try and buy multiple top line centers (and I don't just mean the trade cost--I mean the cap casualties, as they will be numerous and painful). Remember when Drury and Gomez came in as the big signings, and we weren't sure which one was going to play with Jagr and put up HUGE numbers? Then neither of them did, and Jagr played with Dubinsky because the pair just fit better than either of the big name guys. That's what we need. Good "fit" guys to play center between our absurd number of top six wingers.
The short version is that people keep urging the team to go out and gamble on high profile talents. I want the team to focus on building a complete team around the high end talents that are already on the roster.