While electric shock was nice for taking out high health low stamina enemies, with the change from health stamina lust, to health mana lust, a spell that targets stamina isn't needed so it would need to be changed, or stamina added back in. That said I would like more spells to use in combat and am sure they will come in time.
The loss of stamina makes some of the enemies that were vulnerable to electric shock over anything else considerably more difficult to defeat quickly, (the ghosts in the graveyard for example) some way to deal with them would be nice.