This. Since you can basically control any team, at any time.
I'm planning on only controlling "my team". However, if I see something that is out of whack (which I can justify most of the moves) then, I'll consider compensating the team that I feel got cheated. Like in the trade mentioned, I might add Loney with Krenshaw for Berkman (or something similar but first I factor in a the variables- like contact, age. potential, etc). However, with that being said, I don't see myself compensating other team too much.