If you look at the games played up to the end of 2004 you can see the Hawks had already got 30-50 games into their then new core before Clarkson arrived. Oddly enough despite claims otherwise they in hindsight rebuilt their midfield first then added the talls.
1992 draft: Richo (194)
1995: Bowden (170)
1999: -
2000: Pettifer (37), Coughlan (49), Newman (54)
2001: -
2002: Schulz (21), Moore (9), Johnson (143)
2003: Jackson (6), Tuck (3), Raines (1), Foley# (-), Brown (157)
2004: Deledio, Tambling, Pattison, Polo, McGuane, Thursfield#, Simmonds (104)
1992: Crawford (232)
1999: Clarke (47), Bateman (42)
2000: Williams (33)
2001: Hodge (45), Ladson (14), Brown (40), Mitchell (50)
2002: Boyle (-), Sewell (6), Osborne (39), Campbell (31)
1997/2003: Croad (143)
2004: Roughead, Franklin, Lewis, Murphy, Taylor, Young#
# - rookie listed in 2005