Good articles. I think the PoS∕PoW discussion is next on the list when the scaling issue has been resolved. Hopefully Ethereum will have shown that PoS can work by then.
It seems that we are going to witness a lot of interesting developments in the coming years in respect to the contributions of various alt coins and how bitcoin incorporates, plays off of them or competes with them.
I think that in the question/answer period of the following video, Andreas Antonopoulis has many very decent discussion points regarding Ethereum (at 1 hour 8 minutes), blocksize scaling debate (at 1 hour 20 minutes) and a potential hybrid conceptualization of proof of work and proof of stake (at 1 hour 38 minutes)
https://youtu.be/d0hxWC7sP2kIn essence, we are likely engaged in sloppy thinking if we consider winner/loser type competition when it comes to various platforms and the ability of one crypto to absorb aspects of other cryptos to become better and to better complement each other in the providing of services to the people that would not otherwise be provided to the people by traditional fiat institutions.