With the early chemistry we’ve seen between MacKinnon and Necas, I wonder if we see the former paired with McDavid. The concern would’ve been that both McD and MacK need the puck on their sticks, handling zone entries, etc, but as we’ve seen with Necas, having two such threats on the same line can be too much for the opponent to handle.
You could still argue that the team would be better served with the two of them down the middle, but I could see them being unstoppable as a duo.