how to achieve <1 sec confirmation?
Well, first of all, you abandon the concept of blocks. It's a ridiculous Bitcoin atavism in a PoS currency. It limits you both in time and space, i.e. in the number of transactions that fit into one block.
This is also not good for fees. As the number of transactions grows, they now have to compete for the privilege to be included in the next block. Why create artificial scarcity?
I don't know why BCNext went this way when Ripple already existed and boldly abandoned it. It looks like a step backwards to me.
This architectural mistake leads to the need for Transparent Forging – a fragile and artificial construction where the network has to decide which node will forge the next block.
Simcoin will use something similar to Ripple's ledger consensus, but without all the bloat – trust lines, distributed exchange, arbitrary currencies and whatnot.
Whether I will be able to achieve it we will see in a month or two when Test Net becomes operational.
