​As I've been in the periphery I haven't been aware of this; what exactly do these new members want changed about how PLUG is organized that you disagree with?  

Most disagreements can be handled procedurally and fairly to prevent festering situations that tear the organization apart.  It is important to remember that there is no reason for those people to 'take over PLUG'; there is nothing to keep those individuals from forming their own LUG and taking any members that agree with their vision with them.. if they end up being better organized, better promoted, and better funded guess who wins the most members usually?  This kind of personality war is exactly what creates such a fork.  In the organizations that I'm active in the leadership has the club itself vote on every major change that affects everyone to prevent any one person from becoming a gatekeeper or being disruptive by continually bringing up the same issue.  That's all I have to say about the issue :)