It will be fun to see how Fiala and Rossi fit together.
That said, my gut says that Fiala would be more effective with Ek and possibly Zucc on the other wing. Fiala seems to thrive on carrying puck and shooting. Having two guys that can dig out pucks and get it to him quickly, not in a beautiful play, but just quickly, to keep the defense off guard, and giving Fiala full license to shoot 85% of that line's shots, is intriguing. Almost like Gaborik.
Rossi and Kap should play off each other well. Two slippery, strong guys that make tight plays in traffic. Both can shoot or pass. Out far or in close. Maybe put Johansson on LW to add more speed, defense, and playmaking to the line.