Nah, you don't draft players just for a year and trade them out, Anderson and Rowell will be asking GCS to trade them out in 2020, recruiting team need to do due diligence before drafting Lukosius, Rankine and Ben King last year. They need to keep their jobs also, if the top ask if you let go of Lukosius and Rankine after a year what make you think Rowell and Anderson stayed.
Recruiting team : because Adelaide poster in BF think this is better for GCS.
It will come down to if GC think Rankine and Luko will sign new contracts. If both request to leave next year out of contract, then the trade deal will be a lot less.
Basically the pick crows get this year is likely the best we could offload in any trade scenario going forward.
Old risk vs Reward