whats so great about POS anyway?
Well in my very biased and bigoted opinion, PoW does nothing but waste a fuck ton of electricity which regrettably is usually made by the burning of fossil fuels (or worse). PoS on the other hand, can be fully utilized on something as basic as a Raspberry Pi that can easily be solar powered for a 'reasonable' amount on money. I say reasonable in the sense that it would be insanely cost prohibitive to power a GPU card or ASIC via solar cells for generation of coins/network health.
You want to use crypto currency to change the world, its much more feasible to connect the world with pi's then a gpu farm.
[edit] Or wind etc... maybe a pig farmer could burn enough methane to make it profitable but thats getting pretty far fetched.