Please add enchantment to increase damage done by destruction spells, so just like melee or archers, we can improve our power.
One swing deals 160 damage while master destruction spell only deals 75 damage
Proof :
Legendary dragons appear at 78 level and they have
4163
hp
An 78 level character should at least be able to deal 250dps.
But mage cannot improve his spells as he levels up. He is stuck. He can improve magicka but thats useless if you have destruction spells cost %x less. Because you can down it onto %100.
Lets see highest mage burst spell
75 dps. requirement of full less cost enchantments to cast properly.
Expert spell also deals 60 damage one cast, around 130 when dual cast.
so its 130 dps.
With the highest burst you can do , it will take 30 seconds for you to kill a single dragon. (considering that you will shoot an thunderbolt every second without missing)