People need to see beyond the number of goals Fellaini has scored, and that's coming from somebody who loves STATS.
We hoof the ball much more when Fellaini is played higher up, and while it plays to his strengths I don't think the knock on effect of what it does to Jelavic is acceptable.
Sure, we could play the ball along the floor more while keeping Felli behind Jelavic, but then it begs the question why we'd even play him there, as his long ball dominance is what makes him so good in that position. He's not terrible at playing the ball on the ground by any means, but he's no Mirallas either.
Fellaini playing in his destroyer role in the middle would lead to us conceding less stupid goals, and would really strengthen up our midfield.