Hello!
Started a warlock in the EA and noticed that altho there are a few spells which have multiple varations of the casting(like Arms of Hadar) the most spammed spell, Eldritch Blast is the same every time. Since you cast that spell a lot if would be nice to have a few more variations of the casting. I guess most of the voices have been recorded already but maybe you could apply some filter on it. It would also be more fitting if the warlock spells and a few of the cleric/wizard ones would sound more sinister or more "echoey", f.e. like the 'lock casters in the original NWN2( sadly they changed them in a later patch).