I wish you didn't drop the two-handed weapons every second kill. It's kinda pointless, especially since you can pick up the bodies and the weapon drops to the ground after. They're certainly no more powerful or unbalancing then the hidden blades. Rapidly pressing B quickly after the weapon gets stuck or something like that to rip it out the enemy's body would have been pretty cool.
I would have assassinated the mercenary captain in a second for his scabbarded two-handed sword, you know, for the greater good and all.