What are you trying to say here? Coin weight in a Proof of Stake type model only deterministically gives you control if you own more than 50% of the coins.
I don't have time to reply to all this right now, but it's pretty common knowledge that you only need 51% of coins
currently staking to control the network and
not 51% of total coins. Using coin age as a finite resource in this system just makes it easier to attack, which is why NXT never used it, and why Blackcoin is removing it. Reputation makes a much better finite resource than coin age and makes it so large holders can't perform effortless attacks, just like how PoW works.