Unfortunately, since I started working full-time, I haven't had the time, energy, or inspiration to work any more on spellshaping. There are a lot of holes still in it, and a lot of things that need to be cleaned up, but I just haven't felt up to it. While I'd like to finish it, I don't know how realistic it is to assume that I'm suddenly going to be magically capable of doing so.
My group is planning to try out 5E once we actually get the Player's Handbook. If we decide to jump editions, I highly doubt that I'll come back to finish this. If we don't, there's still a chance I will.
Please feel free to post anything you write as additional material. If anyone wants to try jumping on the revision and fleshing things out, I can send you my notes if you PM me.