IMO I wouldn't bother trying to unpick the model, you've only got certain options and becoming a managed supplier to fill bum on seat roles isn't one of them for the vast majority. Even if you do it's caught as per the example in the legislation.
All that and on top of that is the fact it's just too early trying to fix it all in one post. We haven't even seen the bleeding tool yet so why is everyone trying to massage their models to fit when we don't even know how the rules will be applied?
EDIT : Oh and you've not got your options right either which doesn't help. I don't agree with Option 3 at all without going in to the others.