It’s worth noting that Ethereum is still by far the dominant Blockchain for smart contracts still. Having studied the proposed scaling solutions I think the next few years could be very positive for Ethereum. We will see not only a move to a proof-of-stake (PoS) model but the introduction of concepts such as sharding (on-chain chain division), payment channels such as Raiden (off-chain trusted payments) and Plasma (sidechain smart contract blockchain pegs). Let the battle commence!