Sniper, since they got the Elite crossbow, they can use divest, so that's why SB have it.
Silent or Curse, can be avoided with VIT over 99.
Also, Stalker can kill people, but most people rather go full reductions and only auto attack them...
Stalker can do a good outpost damage with copied skill, so I don't see why it need to be buffed more when they got already enough buff.