Because there is quite a bit of misinformation that needs to be updated.
The Deception tree carries a lot of misinformation on it, which should be changed.
To name a few.
1. Any Deception build without Charge Mastery is a bad build.
3. Discharge should not be used on CD except possibly in pvp when you don't have time to build a stack of five, but it is a significant dps loss to do it.
I really think you don't play PVP so you really don't know every viable spec. currently playing with http://www.torhead.com/skill-calc#200MZhGrRkhMbtzZf0c.1
I've found it to be the most viable Chain Shock spec for PVP, Charge master isn't greatly needed in PVP with a chain shock spec, Waiting for 5 stacks to use Discharge in PVP is an awful idea discharge should be used on Every CD.