Not to muddy the waters here but I have a question about Weapon Specialization as well.
Each Class at level 3 gets the  "Weapon Specialization feat as a bonus feat for each weapon type with which this class grants you proficiency."
Does that mean an Operative Level 4 gets the following damage bonus
All Basic Melee Weapons + 4
All Operative Melee Weapons +2
All Small Arms +2
All Sniper Weapons +2
Is the damage bonus at odd levels rounded down or up?
Another question is how does an Mechanic character get a proficiency say in Advanced Melee? 
Thanks in advanced