Thank you for reopening this.
As stated it's not wiifit that would have an attachment rate of 75% ( unless it stays packed) but I still firmly believe the balanceboard can.
why:
1: Like the zapper the balanceboard can be packed in with other games like ubisofts rayman raving 3( if they plan on adding multiple board support)
2: nintendo could want multiple boards supported and I think they will allow it in the future. What more fun can you have when you are playing for example wii ski with 2 till 4 persons on 4 boards( thus meaning the attachment rate will go up on a single Wii with 300%
3: Imagine the first fps shooter that uses the balanceboard or even more training games. They all will get people wanting to have it ( ea is working on a much harder wiifit game that actually will get you more fit then a fitness school or atleast they promise.
So now you need more validation for my rediculous prediction.
Was John's not rediculous as well and he came correct.