Well, although the adding of features for this newly coming version is over, I'd like to add my two cents with a little suggestion of mine...
Bio Force Shocker.
Now this is a BIG fu***** sword...
Damage: 6d7? - Melee. However, you use up an energy cell each time you use it.
Special: Has the ability to 'shock' an enemy, randomly stunning them for a limited amount of turns (Maybe 1 or 2? I'm not sure). Alternatively, each time you score a hit, a 'shockwave' is unleashed, in BFG fashion, dealing reduced damage to enemies that are nearby.
Source: My brain, after having been through TVtropes way too much. (If you notice, Bio Force Shocker is a pun to Doom-related stuff. Its acronym is BFS (Big Fucking Sword(Although it works more like a taser, or a vibroblade, if you ask me)), and, in the Doom movie (Which I actually liked a bit (Hides from stones coming her direction)), the BFG is acronym for both Big Fucking Gun and Bio Force Gun.)