What.The.Hell.Are.You.Talking.About?
You obviously don't know how brain storming actually works xD
You brain storm ideas, thoughts. You sit down with people in front of a board of some kind and gather what everyone thinks about stuff. You can, for example, organize a poll to pick the next enemy etc. Make a discussion. Essentially, you don't do shit other than gathering ideas for the time being.
If you implement the idea, it is no longer a brain storm - it is a functional implementation. It is a feature that someone has invested (or wasted) time on. Also, to emphasize my point - Kairi rarely, if ever, removes stuff once implemented (did it once - with fly animation rework in GH1). What you have here is essentially what will be in the final game.
Trust me on that. I've been there from the very beginning of GH1 and it is exactly the same story all over again
Don't multipost with one sentences. It looks weird and clutters the thread. Quoting exists for a reason.