As an uninformed public I'd much rather have 200 microbitcoins (or whatever) worth $200 total than 2 bitcoins worth $200 total. I bet it would lead to a lot more adoption purely on the psychological implications alone.
Has merit, but if using bitcoins is profitable, there will be adoption. There might be a speedbump here, but not a wall.
Whatever happened with that idea of bitcoins, bits, and satoshi's as the delimiters? I thought that was brilliant. It went like this;
Bitcoins stay the same.
10,000 bits make a bitcoin.
10,000 satoshi's make a bit.
21,000,000. 0 000 0 000
bitcoins bits satoshi's
So if you buy, .01 bitcoins, you have 100 bits.
It sounds great to me. It makes you feel like you have more of it, and can buy and spend it more easily too.