A few things I could like about PoS. The premine wallet/wallets could set up a level of security if always running. It would also generate coins I hope would be used at least 90% for giveaways. I would like legit promises they would be doing so, though.
It would also stop more Nyan from being produced faster than there are buyers. Counter to this, a fiat/Nyan exchange might help PoW accomplish nearly the same goal with a halving before the launch of the exchange. Though that exchange could equally help PoS.
So with PoS, what interest rates are we talking? Over how long? If I remove or add coins from my PoS wallet, will it stop earning coins for a while? I heard some coins require holding wallets. How many coins would it generate versus what is generated curently?
The amount of coin generation and all these things are open questions that should also be discussed as a community. As for the premine coins, I have it from the dev that they no longer hold most of them. A lot were given to Chris and a large amount were given away for promotion and bounties. I don't know how much they still hold exactly but it's definitely less than half of the premine.