Hawthorn gave up favourite son Trent Croad and Luke McPharlin to Fremantle in late 2001. In return the Hawks received picks 1, 20 and 36.
Pick 1 turns into Luke Hodge and pick 36 is Sam Mitchell, with pick 20 Daniel Elstone. Hodge and Elstone are still friends and business partners.
Hodge and Mitchell went on to captain four flags in eight years between them, with Hawthorn getting back Croad as a 2008 premiership player.
You cant really count the players the picks pick up though.
Croad was a 21 year old pick 3 who so far had been nothing but a dominant force for his age.
Croad wasn't a terrible trade for pick 1 at the time but i think it shows you shouldn't chase players that aren't asking to come to you.