Which of these could get included into classical Bitcoin?

One of the early innovation has come from Peercoin, adding POS to POW mining. Sometimes marvelling if Bitcoin will pick that up later on the road, to keep TX fees low and still secure the network on dwindling hashrates.

Perhaps we are a tad to much focusing on a new coin, and not enough on coin evolution of any older one.


A kind of service provider in between phone and your wallet could act as a proxy for lightning fast transactions. Like a prepaid mobile wallet. At the end of the month (or paid in advance) you transfer X BTC to ballances.
Admitting that is pretty much going back to let's say PayPal or similars. But not "all the way back" since one would use that ONLY for the small and quick transfers, think cup of coffee.