heres what i think should be in fifa2001:

3rd kits
home and away goalie kits (that can be edited)
lines men
bigger pitches
slower players
noticable height and weight (that can be edited)
real referee's and stats
realistic transfers (teams and players can decline)
orange ball for snow
more national teams (where are portugal in fifa2k?)
more leagues (e.g. korea, portugal, austria, croatia, russia, romania e.t.c.)
a built in editor like FEd2000
more skill moves
player ages
more stadia
european cup (like euro 2000)
world club champs
euro super cup

i could go on forever

if anyone else can add to this please reply