Burton had never really fired, and Hawks were happy to trade multiple picks looking for top talents.
You are normally win with 3 15+ picks for a top 10 in the comp. They did a similar trade for Burgoyne and it worked really well. They just learnt, that if the player is not willing to work hard then changing teams won't help.
Just found it interesting that Wingard went for what was a pretty big haul given he was on the way down at Port and was somewhat getting pushed out. Burton had played in most games including the finals just before he was traded so it's not like he wasn't a best 22 player in his third season.
Would we be OK with a pick 17 and Chapman for Bolton? I know it won't happen but that would be a pretty similar trade.