I guess a couple of points have been raised:
So, you log the entire time in the aircraft and then show as flying over 900 hours in the 365 days - are you breaking the law? (I say this as unfactorised, I have been over 900 hrs....) What will your new employer think?
As for the argument about roster management i.e. calling in sick - just wait for the hearing about refusing to fly.
As augmented crew, you are only required to be in the flight deck for T/O, LDG and to provide rest for the operating crew, so log the hours accordingly, P1/P2 when in the seat, and P3 when on the jump seat (which also applies when operating as safety pilot)
Whatever, at the end of the day, you take the money, so fly the way they want you to fly, or get into the office and try and change it.