Remove amulets and introduce static stats for each class. You can modify stats only with runes, sigils and traits. Not only it would be much more effective and easy to balance, it would open more build diversity, because you would be able to use any spell/utility and not restrained by condi/power/bunker stat specialisation. Also its better design to be able to use your class 100% than like 33% because you dont use condi dmg or power or something else. Let the traits decide your role not amulets.