Currently your design is just shit, but I still give you the benefit of the doubt that it will evolve into something better.  

Just because the top coin is not currenly PoS , does not mean it won't happen in the future.  

I trust my PoS coins more than any PoW coin especially BTC, considering the mining Pools can delay or refuse transactions and basically hold my PoW coins hostage at will.
Plus right at this very moment the Chinese Mining Pools have the Power to Overwrite the last 8 to 12 hours of transactions at will.
Funny how no one worries about that.