The PvE "Sidekick" Shadow Priest build

[Concillian]

Looking at the build, there is one thing I would change, skip shadow power and go with 2 points in Imp PS, 1 point in Silence, and 2 points in Fade (since you have no threat reduction from Silent Resolve). While the additional 15% crit would be nice on Mind Blast and Shadow Word: Death, you're majority of damage is going to come through Shadow Word: Pain, Vampiric Touch, and Mind Flay (and these spells are less of a threat jump than Mind Blast and Shadow Word: Death can be). There are also enough mobs around to warrant the use of Silence on occasion as a backup for the Shaman and Mages.

1) fade is temporary reduction, so there's rarely an occasion to use it ever, especially as a shadow priest. When I was shadow I'd fade and it generally wouldn't even drop aggro because DOTs are running. Fade is totally useless as shadow, at least as far as I'm concerned.

2) Silent Resolve doesn't do anything in shadow form.

3) Pure raiding, silence completely unnecessary. Anything important that you want to interrupt is immune to silence but not interrupts... silence isn't an interrupt, so they're immune.