The FO did plenty. I've said it elsewhere, the talent on the team is already on the team. Free Agency periods only have bit players and marginal players nowadays; otherwise they get snapped up and SAS ain't a player nowadays. There are a number of young guards and wings on the team already and what they needed was to let the vets go and put shooters around them to open up the floor.
That's exactly what they did, plus potentially found the next overseas contributor in Landale. I know people their britches here about Z. Collins, but they could afford to take a healthy swing at a young big talent.
That's it. Instead of tying up loads of cash on maybe-fits and potential chemistry-wreckers, they're giving this team to Keldon, Dejounte, and everyone else. This is exactly what they should have done.