I see you already had most of what I suggested... I admit I didn't read it line for line, just looked for a few items I know get dropped from the more popular lists. Since I didn't see them, it may have been because it's seems rather jumbled. Thats just my perception though.

As far as having the extreme fetishes listed or not. If you were not to list them. I wouldn't use your checklist, as it then becomes a personal list, rather than one that encompasses all the activities that can be experienced. Regardless of level of play.

I also didn't notice blood play, but that can fall into cutting and piercing.

Just my two bits worth though.

ID

P.S the idea of ballooning can be found in our "what is your fetish?" thread in the knowledge base threads.