We just picked up our 2016 3875FB May 11th and we absolutely love it. We have the half bath and let me say there is a ton of storage in the half bath, cabinets galore if you want to use as oveflow for a pantry.
I never thought I would be a fan of having a 2nd bath for two people and I can't say enough good things about this, we love it.
There is a pull out tray/desk area in the living space below the TV. However unless I were working from my RV I doubt we would use it much, maybe for cutting out a pattern to sew as it is quite large.
I am typing this as I sit in our theatre seating massager/recliner.
We traded our 2009 Big Horn 3600RL for our 3875 FB which we custom ordered and it took 8 weeks. We drove from Florida to Michigan and traded our 09 and we spent two nights at the dealer doing our PDI, as the dealer has spots with water and electric.
While we were at the dealer another couple arrived from Washington state to pick up their new 3875FB and they were in the spot next to us at the dealer.
Not sure what your thought process is to delete the half bath in exchange for the pantry/office space.
The improvements that have been made over the past six years since we bought our 09 are wonderful.
Susan