we added in doctors skill into the formula which determines how severe the injury is (including the chance that the injury doesn't translate into an injury which lasts longer than the game).
This is equivalent to keeping the length of the injuries the same and speeding the healing process proportional to the doctors skill.
Forrest, as you understand, with this implementation there is no way for a simple user to evaluate the impact of the doctor.
This makes it difficult to decide which level is appropriate for a certain rooster.
Do you think you can provide us with a rough estimation, like:
-doctor level 5 reduces the gravity of the injury by 10%
-doctor level 10 by 15%