I think this will help leaders better gauge the type of player that is applying to join the clan. Experience will factor in but also whether the player is a drifter, continually moving from clan to clan. As it stands, there's no way to measure a good clan member other than their base style and upgrades completed.
The only use of this statistic is to negatively impact a player. They have not and will not include negative statistics.
Until the day they decide to finally include a tally of the battles you've lost, personally and in clan wars, I'll place a bet that any other negative based statistic won't be included.
I think it could go both ways. if a member belongs to a clan that has won many clan battles and has great experience it would be positive in looking at the member.