_Castle_ should be able to answer this as he was the original Dev to "whiteboard" these sets back in CoV Beta.
Don't underestimate the copy/paste function, Shadow Maul will likely stay (perhaps moved to level 18 power choice but unlikely). Touch of Fear and Siphon Life are the most likely candidates to also stay since Touch of Fear has the same application to power balance as Stun does in EM (where we agree); and Siphon Life is balanced as it becomes a minor health benefit if you choose to slot damage or ~30% heal if slotted for heal. Siphon Life also gives a different Stalker "flavor" to this melee set since it distinguishes it as ever-so-slightly different (higher survivability). I agree that Soul Drain will also be converted to Build Up.
Dark Armor will see the loss of any AE attacks (Death Shroud) and Cloak of Darkness is far too powerful as a PvP power and redundant in PvE so that will leave as well. Cloak will likely be replaced with Dark Consumption (from Dark Melee) since this is equivalent to Energy Drain under Energy Aura.
In short, DM is OK (Accuracy debuff/heal is nice but most Stalkers survive based on burst damage anyways). DA is OK as well but fits into a more of high-breed role between Energy Aura and Ninjitsu (with a Self Rez like Regeneration) but will be lacking an ending high-defense 9th tier power. Nothing overpowered per se but nothing too shabby with the additions.
_Castle_, weren't you the one to ask for "new" Stalker sets? (i.e. the psychic-dagger set)
