I know that I will sound like in Real Life - an annoying member of The Elderly :P - but all I've got to say is that the camera used to be much worse.
E.g. Patch 3 (IIRC) introduced a zoom into the puddle of blood left by just killed enemies.
I agree that there are moments when catching an enemy "in the sights" is a chore - in such cases I click on the target's icon, either toi centre the camera on them or to loose the projectile or spell.
