A more realistic and still viable solution would be to mainly deal with satoshis rather than Bitcoins and perhaps split satoshis into smaller bits. This, however, would only make sense if the scalability issue is solved, and transactions can cost 1 Satoshi or less.
Lightning networks can do that. You can divide a satoshi by another 1000. The question is whether they'll solve all the other stuff like being simple, safe and appealing enough to become the de facto front end for Bitcoin. I certainly ain't convinced yet.