I am not buying this PoS concept. For one reason, human society does not favor socialism in the past. If you can get paid without effort, then nobody will end up working.
POS isn't totally without effort. Well, for miners at least. Zeit is a POW/POS coin that I have spent a lot of resources (effort) mining in the POW phase in order to build up a supply in my wallet to generate more coins in the upcoming POS phase.