by the way, yes - there's already a lot of hassle when choosing an enemy between its improved and unimproved form... so now the whole point will disappear.... Obviously, we should wait for a solution to this issue in the patches for the new expansion... in patch 3.4 or so... :D It wouldn't hurt if the avenger skill applied to all forms of the creature...
Асха - Порядок! Ургаш - Хаос! Силат - Воздух!
Шаласса - Вода! Аркат - Пламя! Силанна - Земля!
Сар-Илам - Дракон-Маг! Эльрат - Свет! Маласса - Тьма!