Earlier quoted context omitted.
How is it trivially DOS'd? You don't need to share all your private data just the data about transfers using the system which isn't going to be particularly sensitive unless you are in a bad way financially and will be worth it to minimize the amount of settlements required of your business. I'm new to blockchains? I'm pretty sure I'm not.
Look into paxos and raft attacks. You don't know enough about this science to promote it as the cure for what ails you. As for sharing information - youre right... if you don't use blocks
I think we're done here. You're not doing anything but saying Nu uh! and calling me a liar.