Yes, probably if someone just wants to play a quick game and can have quick access to these players to add them to teams if they choose.
But the way I play, I always have to play franchise mode or a season mode for any sports game I play, or it's just not fun to me.
So, what I will do is create two updated versions of your roster.
One with the players in free agency as you had them,
And two, a franchise roster with which turned out to be many more players than I first thought, (52) players in all, and put them all on their respective minor league teams, so they can come up through the system as a franchise progresses.