I think the problem is that, unlike the inclusion of Marraige, which is an immersion increasing social feature that Fable games had but Elder Scrolls lacked, the changes in the spell system are a step down, because Spellmaking was removed for the dual wielding. If all the spellmaking options were still in place, it would be fine. Especially if you could cast tailored spells from each hand. As it is however, there is very good reason to believe that the effectiveness and potency of magic have been significintly diminished, but with polished, fancy effects that serve in helping to distract people from what they have lost.