Here's what they did...
Ty Vickery (Richmond, restricted free agent)
Jaeger O'Meara (Gold Coast),
Tom Mitchell (Sydney Swans)
2017 second-round pick (Carlton)
2017 first-round pick
2017 second-round pick
The Hawks paid market value at the time.
Trading future picks is always risky and they'll pay for it. Having said that, I wouldn't be surprised if they start targeting VFL/WAFL/SANFL players with whatever picks they have left.
Their recruiting and coaching has slowly fallen behind league standard over the last few years and they've been relying heavily on senior players to keep their playing standards high.
Hopefully they fall into a Richmond like hole where they struggle to win a final for two decades.