As a necro main I’ll say scourge is fine the way it is, even the barrier. If a scourge is killing you easily you’re probably doing one of two things. Stood next to a shade or the scourge, or you’ve gone for a million boons and you’re now surprised the scourge has corrupted them all. Fight from range, stay out of red circles and go boonless. Congrats you beat the scourge. Each spec has its weaknesses and strengths, don’t assume your strength is your opponents weakness.