As an astute armchair COACH cough cough I never change a winning team. FULL STOP.
When injuries occur then is your chance to shine. Your performance must be so spectacular that I cannot afford to swap you out when the incumbent returns.
So...the better player is selected to start the year. Gets injured for 5 games. His replacement doesn't shit the bed and plays admirably in player A's absence.
Player A doesn't get his position back once he's better?
I personally do not like this