I would love to see the power claw given ingame because they are so destructive. I will be playing as a storm boy/nob they can get the power claw but its very rare I hope I can use the two because it would be a very devastating combo. I would also like to see the SHOKK ATTACK GUN because it is so unpredictable so i would never use it but it could be a life saver in dire times.
If i could get away with it, duel daemon weapons and a jet pack. It would be so joyful watching everything die as i swing those things around cleaving everything in sight.
For my marine, surely Power Sword - Plasma Pistol combo or even dual wield shields if that's possible. For da Green Tide Power Klaw all the way. For the spiky marines full Khorne and dual wield chain-axes Eldar? No freaking idea, surely something shiny.