Who was the last midfielder we had who scored that many?
Not a clue, its perhaps the least necessary position to replace, but will be (I feel) the thing that really tips the team over the edge, I think if we can get someone quality who can deliver the ball to the wingers/strikers well and consistently, and chip in with some goals himself, that'll be what pushes us up.
Edit: And I don't think its being THAT unrealistic, when was the last time we had someone who could go past a man as easily as LuaLua, or with the value of Arismendi.