It is rather rare to find an active group indeed. As you said, with FeralHeart dying off, it's rather hard to get groups started and keep them going. There are a couple that are still going though. I'm in The Ebon Circle, and it's a nice group. Not a lot of rp, but we're all really close. And no role play sample is needed. ;)
I used to be a co leader of a RP group, And yes, Most RP's will go inactive withing a few weeks/months, But as Lady said, It may be because of illness. Same reason as to why the leader in my group couldn't cater for the RP anymore.
But as once as registration opens back up. I think FeralHeart will be full of active and new creative RP's.