Parise, Richards, Marleau and Giroux won't be possible because they're either owned by teams fighting for the title or I'll have to seriously overpay to get them which like you've all said doesn't make sense.
But what about a Fleischman or Moulson for Backes type trade? I'd hesitate on Moulson but Fleischmann for Backes seems pretty even no?
20 Team Roto: Year 4: Keep*5: C,LW,RW, 4F, 3D, G, 4B: G, A, PPP, SHP, +-, GW - W, SV%, SO
RW: St. Louis*
F: Moulson*, Stepan, Bozak, Zajac
D: Gardiner, Carle, Ekman-Larsson
B: Bouchard, Wisniewski, Neuvirth, LaBarara, Pouliot