The advantage for will was that you got to play the same spell in the same turn, doubling your effective card pool. If it's suspended, your stuck with playing everything once, as everything is removed. This is still powerful, but not necessarily broken.
...on the other hand, any spells with suspend that you played from your graveyard would be removed by the suspend effect, to be played ad nauseum, which is a considerable blow against the Will theory.
...on the other hand, any spells with suspend that you played from your graveyard would be removed by the suspend effect, to be played ad nauseum, which is a considerable blow against the Will theory.