Devil's advocate:
While it's pretty obvious that there's nobody poised to do this, and that the only guy who has done it before was a once-in-a-lifetime talent, it's conceivable that it could happen again in the next decade.
The reason being, we are seeing the theory of hockey move away from rigid definitions of each position. More and more, coaches are emphasizing that players are simply acting within roles and spaces. And there's also a huge shift toward shot creation rather than shot suppression, particularly for talented contending teams.
Soooo... it's conceivable that pretty soon we could see a Karlsson/Coffey type defenseman come into the league and land on a team that allows him to activate as more of a rover who simply plays higher in the zone than the forwards. While technically labeled a defenseman, his main role would be closer to that of a trailing center, and that means a lot of touches. A skilled player with strong teammates would rack up a lot of points in that dynamic, which is why Coffey was routinely top-5 in assists. Now imagine if that player is also a very good shooter.
It would take the right player landing in the right place at the right time, but I do think it could happen in the foreseeable future with the direction the game is going.