Here is my other idea:

There would be a dopping centre, where you can grow your player's capped speed or strength.
The dopping centre would have levels, for example:
level 1: +1 speed or strength
level 2: +2 speed or strength
etc...
But the level of speed/strengh can't be higher than 20.

The disadvantage of the dopping centre is:
There would be inspectors who check if the players use dopping. The level of the dopping centre influence the success of the inspectors (the higher the centre, the lower the chance of the inspectors' success).
But if the player "fails" the dopping test, there will be money penalty or the player can't play for X weeks.

Basic bugs don't get fixed around here and you're actually still making new suggestions around here.... IN 2019!!!!!

Oh c'mon man... in the NFL, but in every professional sport in the whole world, everybody use doping.
It's an open secret.
Yes, doping is cheating, but everybody use this cheating

It is just an idea to make the game better (or more varied)

In the game you don't need to use, just if you want.

Oh c'mon man... in the NFL, but in every professional sport in the whole world, everybody use doping.
It's an open secret.
Yes, doping is cheating, but everybody use this cheating

It is just an idea to make the game better (or more varied)

In the game you don't need to use, just if you want.