Of other games I have played, characters that were specialized in magic would cast not just cast fire/frost bolts and fire/frost blasts but would do AoE such as fireballs falling from the sky and a wall of fire appearing in front of the mage.
My point, I wonder if Skyrim will just have boring bolts and blasts or if Skyrim will have amazing magic spells.
NOTE: I'm directing it specifically to destruction. I know conjuration will be good like always