I just re-watched the PPs from last night's game, and I think having Granlund on the 1st unit really helped with the breakouts, since he's a lefty (and he's fast and skilled).
On all 3 PP opportunities, I only counted one time where the breakout failed, out of about 8-10 breakouts. The rest of the time, all the breakouts worked and they kept possession of the puck when entering the zone (no dump-ins). And I only counted 3 drop passes in total, and they worked every time.
So they may have found a good balance between the units. Both units have lefties and righties, able to skate with the puck and enter the zone. It gives more options and it's less predictable. They can afford to put Boyle back on one of the units if he's healthy, and it won't affect that balance much. (I assume Simmonds will be out for a little while, but I could be wrong.)
And with Granlund on the top unit, there was a couple of plays from behind the net, which was interesting. Nothing really convincing, but at least it was different.