I would definitely avoid this deal like the plague, dude. While Zetterberg is the best player in the deal, you are seriously overpaying to acquire him. If you were getting a much more solid throw-in than Morrow, I might be more inclined to like this deal a bit, but you are giving up solid production across the board (minus Gagne because of the aforementioned injury risk). Morrow's SOG totals are down severely from past years, and it looks as if his role is beginning to lessen on this Benn/Eriksson led team. I really have my doubts about Morrow having production anywhere close to where he was last year.
Kessel and Campbell have both been producing above their 'normal' levels, and they will likely tail off considerably, but they will still be really serviceable options. I would much prefer average production from Campbell, Kessel, and Gagne over Zetterberg and Morrow, mostly because I think Morrow is in for a regression. Unless you can get a legit upgrade from Morrow as the throw-in, I would most certainly avoid this deal and enjoy the production you are going to get from your players.
MounD - Double Threat FHL (18-19 champs)
10-Team Yahoo daily H2H Dynasty
3C, 3LW, 3RW, 6D, 2G, 7Bn (IR)
G, A, +/-, PPP, SHP, SOG, FW, HIT, BLK // W, Sv, GAA, Sv%, SHO
C: Bergeron, Barkov, Aho, Point, Kadri
LW: Marchand, Landeskog, Hertl, Marchessault
RW: Stamkos, Tarasenko, Laine, Palmieri
D: Carlson, Letang, Dumba, Weber, Pietrangelo, Ristolainen, Byfuglien*
G: Bobrovsky, Holtby, Lehner, Greiss-Varlamov
Farm: Turcotte, Cozens, Denisenko, Newhook // Sandin, Jokiharju, Dobson, K'Andre // Shesterkin