Yes they would have, but they may have also won in 2015 and literally no one would care right now.
The window shut after they lost game 7 of the ECF. I know they had a legitimate shot at getting back there 2 seasons later but that was a fools gold run if ever there was one and management saw it too.
Had they kept the band together they would probably be fighting for a playoff spot right now and would have probably made it in last year, despite that, they're closer to winning right now than they would have been if they went that route.
I think our little run of success from 2012-2015 should serve as a cautionary tale. Those teams were good, hell we even had a pretty decent farm at the end of the 2012 season which had already bore a ton of quality fruit for our big squad (which is why I laugh at those who want to crap all over this teams drafting, the foundation of those contending teams was built through the draft.) But no one who you would consider "elite" outside of our goalie and that one year from McDonagh that had yet to happen.
They had to cash in all of their chips in search of that guy - Nash, MSL, Yandle. It almost worked, but it didn't. Those guys were older and either eventually retired, left via UFA or declined and were eventually traded.
Had they drafted their "difference makers" they would have had many more kicks at the can. It's not that building the way that they did before can't work, it almost did - but you're working with much less margin for error, a shorter duration in which you can legitimately compete and you also have to draft a HoF goalie in the 7th round.