I am just a parent. I have never played a sport in my life. My daughter is a great ball player, and is definitely top 3 on our team. And I will admit, I want her surrounded by players that match her skill level! Unless the kid(s) in question are highly coachable, have a great attitude, and are working at home to get better - I would replace them! Winning isn't everything, but it is important! We've played on a team that lost all of the time, because they would take anyone that came to tryouts, and it SUCKED! B level or not, you have to earn your spot!