Nah, I think magic is due for a buff. Taking away the option to blast seems very counterproductive as the whole point of what you're suggesting is to diversify magic. If you decide that the utilty/mobility/etc is so powerful that you need to take away the blasting part, I think you've got the wrong mindset that magic needs to be nerfed/you've gone too far in the other direction.

To take away from magic would un-diversify spells and I think that's not what we should be going for here. The point is to have decent blasting capabilities AND more utility. As it stands, sorcery/miracles suffer from the thing where you get 4 different flavors of blasting. For miracles it's Lightning Spears and for sorcery it's Soul Arrows/Soul Spears. I know from can both get rid of the fat in the schools of magic, but then also expand upon them and effectively keep them balanced.