I love vampiric stuff , and i will be one the first guys to buy expansion pack, but i guess i have to figure out another character to play my vampire character different to almer destruction mage cause destruction damage svcks!!

works fine for me. level 40 mage and been using destruction the whole time.

Destruction magic is fine if you lower the casting costs >.>

I currently have 23% reduction on three pieces and I'm fine with it, also I only use firebolt not the big explosiony ones and I'm level 44. I use this and tried conjuration but there is no point because if you get the saguine rose you can summon a dremora for free without the use of perks. On my next character I'm gonna try to use Alteration more because I'm wearing Light armour not heavy.

Just make Fortify Destruction potions, i think you can get up to 90% more damage for 60 seconds

Conjuration is for more then just summoning dremora lords my friend... O the beauty of the Bound weapons, amazing!