Why didn't Riot make Mordekaiser's W a solo speed boost?

Like keep the dragon ghost, maybe nerf the amount of shield he gets from his E, his Q can stay the same, but make his W something he can cast on his enemies? A bunch of magnetic shards surround his target. They don't do damage to them, but it increases his movement speed for a few seconds if he runs towards them. The trade off is that the shards do damage to Mordekaiser if he moves within their range. This encourages him to attack his enemies directly, but puts him at risk due to the damage to his shield. It maintains his sadomasochistic playstyle.