Folks, want to revive this thread and make a final chart in my notes. Here’s what I see based solely on this thread. Can anyone fill in the question marks?
Wide / High / Large => If urgency is high it should be traded in Crossing network where institutional investors provide liquidity. Since its a large, orders not likely to be filled here should be refered to broker
Spread is wide = Crossing will help lower commission
Urgency is high = Broker can help find counterparty or may himself position a trade. Order is urgent so delay at broker end may increase delay costs. If broker start shopping the order it may affect revising the quotes upwards. Risk with crossing is no guarantee of execution. So i suggested orders not likely to be traded in POSIT should be given to broker. If only one choice is to be chosen then I guess it should be broker only.
May be wrong
edit: I think some more information should be required in above. Wide/Large % ADV / Urgent