Actually I´d love to see a change in how injuries work and you might be onto something there.
I´d prefer injuries beeing for no longer than 1 week concerning players not beeing able to play at all. So no player should sit and watch for more than 3 games BUT ... every injury has a "back at full strength" time, which means his skills are lower than normal.
P.E.:
Injury type 1 - out for game (might be cured by special ability of the coach) - no games missed - 3 weeks lower skills
Injury type 2 - out for game (...) - up to 1 week missed - 2 weeks lower skills
Injury type 3 - out for game (...) - no games missed - 1 week lower skills
and so on
And "lower skills" mean ...
Last week before full recovery - -10%
2 Weeks before - -20%
3 Weeks before - -33 %
4 Weeks before - -50%
And maybe "surgically repair necessary" injury, which decreases the skillset by 5% UNTIL you voluntarily sit a player out for 2 consecutive games (or until the off season), in which case he regenerates to 100%. (stackable)
All skills recover to full strength at the end of the full recovery period.
Zwei Dinge sind unendlich, die Dummheit und das All...