I'm not sure why you guys are now speculating of a future in which a 100k increase of the block size limit is possible. You are not factoring in computational limits into this.
Bullshit. You must be young and yet to acquire wisdom. I've seen processing power and storage do 100,000X in my lifetime. If we are to grow to Visa scale, we need only do it slightly ahead of adoption. The right way to do this is not to choke off adoption with artificial limits, but rather to increase any such limits so they stay above the rate of adoption.