I am going on record here and stating that within 10 years it will be amazingly rare for a single transaction to be for a FULL COIN or more. I mean how many times do you buy something >10K? While this may sound like "wish upon a star" it could be 50 K easily in ten years.
Correct. That's the reason exchanges at some point will start using different nominations by default instead of BTC. It will at the same time help people giving them the impression that instead of a tiny fraction of a whole unit, they now own several units. In other words, if Amanda buys herself an amount that's nominated as 0.05BTC right now, will then be her buying 50mBTC, or 50,000Bits, which is all the same, but it gives people a higher quantity of coins from the looks. And regarding your prediction, I am even of believe that in ten years, we could have gone over the $100,000 level already. Institutional capital is just a few blocks away from reaching this market, so we'll be up for some very interesting years.