Well Ariza makes too much money without taking bad money back, but there's a tiny percent chance a contender would want him.
We'd have to pay someone to take Dedmon or package him + something else for bad money we may prefer to have.
I don't think we could get a top 55 protected for Swanigan.
That leaves Giles? Doubt we could even get a second for him now that he will be a unrestricted.
Bogi is what matters, expect to pay much more than you'd like to keep him. Better to know that and spend it later or move him now. I don't want them to trade him, but he cannot walk away for nothing.
Everything else fits, is logical, needed, or in development.
I don't see anything obvious.