It's something that's been planning for a while, I don't know much about smartsteem to be honest. We only recently switched to postpromoter as I was planning on writing my own.
I just skimmed your post, looks like you are doing a whitelist, that's not what we are working on. In fact nothing in your post is remotely like what was suggested here (or what I am currently working on that isn't mentioned).
I can assure you, I didn't jump on any of your ideas.