In my opinion the passive bonuses need to go and you should invest points into combat skills to get access to better combat abilities of that archetype. As it stands every hard hitter will be picking up necromancy just for the lifesteal. You could spend time and energy balancing them or just leave passive bonuses for gear + stats.
There should be unique talents that grant these kinds of bonuses that are only accessible with 4+ points in a school just like in DOS1.
