Yeah i can get behind this idea. Just be careful with the futures. Picks outside the first 15 are unlikely to become anything special (if anything at all), and a lot of top UFAs turn in to overpaid boat anchors.
I'd be targetting prospects that are improving each year but their teams have lost patience with them. Mittelstat, Ceci, Lazar, Reinhardt, tolvanen, jokiharju, brannstrom, domi, turris, etc., are all pretty good historical examples.
Similarly I'd be looking at lower round prospects that have made big jumps but aren't considered top prospects just due to draft position bias. A guy like Crookshank would be a good current example from our squad. Paul would have been the same after he turned it around in belleville (bingo?).
These two types of players are much more likely to be available on team friendly deals long term.
Get your stars through the draft and surround them with quality talent that is lacking hype or taking the scenic route to becoming effective NHLers.