I will be resuming fs01 in the near future.
Yesterday I sat down and was able to write well for the first time in a long time. The ideas just came flowing in and I had to take notes to make sure I remembered to get everything in. The end result was a 6000 word chapter that will likely kick off arc 8.
I still need to finish off the partially written chapter 55 and I will likely have another 2-3 chapters left in arc 7.
The content of the post I made on the D/s endgame actually helped me quite a bit in this regards. I was reaching a point where I couldn't really see a "next step" in order to evolve the story without reaching some form of outcome that I didn't really want to write. Thankfully that blog entry was able to let me see what I have to avoid in order to steer clear and stay clear of that path.
I don't yet have a solid enough idea to carry an 8th arc, so the early chapters may have a "bonus chapter feel" as I continue to brainstorm ideas for where to go.
The block is finally falling away... and it feels good.