Okay, I'll add it. I just hate to add things so late into the process. I feel like the positives of passing substitutes are pretty self-explanatory, but I guess if it's THAT important to go into detail, then I guess I'll have to delay this a bit.
EDIT: Added again. Like I said, I don't want to change TOO much to this already completed analysis, and I feel like what I said is suitable enough to pass as a proper explanation. People should already know how Substitute works.
So yeah, this is done. For good.