Shiel will be at Richmond next season. Take it to the bank.
I think that suits GWS. Helps them keep Treloar and WHE which are harder to replace as well as Conglio.
Also lets them get picks for Hopper and others to improve their list so they are better prepared for a premiership down the track and refine their list management to suit their direction towards their objectives going forward. Helps them with flexibility down the track to chase Hannerbery or whoever as they determine.
Even GWS must acknowledge they can't keep them all at the same ages even at discounted market rates! If anything we are actually help them out and protecting them from the next Boyd type move from whoever. It shifts the expense of their talent into new gun draftees which aids them keeping a more complete effective list together for longer particularly as they get closer to their premiership window which is several years away yet.