I don't think it's worth rebuilding, the majority (all of the actives?) left and made the LN and some other clans. Even if it was once a great clan, the members that made it great are now happy somewhere else. You wont get that back.
^Translation: "I don't get the point of clan either but I just joined one because a lot of other people did, so I did anyway. I don't want to admit that, so instead I'm going to shoot you to avoid answering the question and make a very cheap joke about your username that you've heard countless times before."
ohh how silly silly person... i don't think you are being serious but just in case you are... I view the purpose of clans as a way of bringing a group together that can (a help each other learn (b depend on and (c bring a sense of unity and belonging. in my clan if you go inactive and or become unreliable we boot ya! we are trying to create a group of friends even if you know nothing about the guy (or girl) on the other side of the internet