Kempe stood out the most, as one elevating his game and making something happen with his speed, going to the net, playing a higher level of physical, and shooting the puck.
I would indeed move Iafallo down to line 3...think he's not 100% and should not be top 6 right now. Kempe should get top 6 minutes with that effort and speed. Kempe is somewhat better at center, so could have him center line 2 and have Carter RW. May get Carter going again too. I agree about Mitchell not doing much of anything and may try Amadio in there...or even Andreoff, since it's physical out there.