I hate this idea. I enjoy playing with others, but I'm a loner at heart. I like to have the freedom to be FC-less if I want. This idea forces people into FCs and then pretty much forces them to stay in FCs or leave their forced contributions behind. That's not good as there are often very very good reasons to leave an FC. Sometimes it's not the right fit (you're more hardcore/casual than the FC is), sometimes there's harassment or personality conflicts that are unresolvable, and sometimes you're not being invited along to raids/events. I get this is an MMO and you should be playing with others, but that doesn't mean you should have to give up your independence.