Sentinels Book 3 Theory

I have a theory towards what will happen in book 3. I think Gospel will come back and be Sin (Like) and Sin will be Gospel (Like), I think Flare, Stitch ('wink wink') and Agent Huggins will join the group, and I think there might be something happening between Phazer and Flare (jaw drops). Post a comments as to your oppinion with this theory.