I think this is a good idea.
There have been a lot of suggestions of any kind, good or bad, that were rejected because what a lot of managers like about the game is that it doesn't require you to log in every day, or every few hours, etc.
This is the part of the game that contradicts that notion. Building a team, winning a match, the league, will depend on the manager's skills, decision making, luck... The staff battle is won by the player with the most free time. It's not nice.