Plague; I think that diminishing returns principle is true of almost everything, save perhaps ath and speed. Too much of anything - at the expense of other things - loses efficiency.
As far as fb/FCP I usually did best prioritizing ath then speed, defense and ball handling.
Stamina naturally for both lists.
The biggest strength of fb is causing fouls in your opponent and its biggest weakness is your team turning the ball over.
Ath,sped, bh. Accentuate the positives and ameliorate the negatives
The biggest strength of FCP is in causing turnovers in your opponent, its biggest weakness is in causing fouls for your team
Ath, speed, def. accentuate the positives and ameliorate the negatives.