It is time to squash Proof-of-Stake once and for all. It can NEVER remain decentralized. Satoshi's Proof-of-Work is the only known solution to the Byzantine General's Problem (was a known unsolved problem since at least the 1970s).
You should read
http://www.links.org/files/decentralised-currencies.pdf It explains why PoW is also not the way to go. The
reasoning is quite simple:
Why does
Bitcoin introduce
checkpoints periodically? Because PoW is not secure either.
How is the network gonna find
consensus on that checkpoints? Assumption: the
developers find it. <<< is that
decentralized? I doubt it.