on one hand americans rightly point out diving is a built-in issue in football, yet you still get ones like OP suggesting this retarded rule which would make diving even more common.
>attacker gets fouled in the box, penalty awarded
>OP's rule says attacker must take the penalty instead of the team's specialist penalty taker
>instead, attacker feigns injury
>"AHHHH AY DIOS MIO MY LEGGO ES ATROPELATO"
>someone else has to take the penalty anyway, specialist takes it
well done you've entrenched diving even further.