It really all depends on your current quality and competition. My 2nd account is in a league of 1 to 2 star teams. I filled the team with 3 to 4 star players and the account is already doing well in first place. Every season end, i sell everyone except my 1 star players and buy back 3 to 4 star players. It is doing better than my main team that manipulates from 6 star to 4 star.