My broker is IB and because you stated in your response
so I mentioned IB. In general yes I am interested in finding out how to get access to more liquidity for my option orders when its size is at least 100 contracts. So you are saying the only way to get access to these "small list of large MM or a larger list of smaller MM...that focus on providing liquidity" that you mentioned before is through a trade desk? Do you know which brokers or companies would offer these kind of trade desk? And also how do I work my orders to find market makers for my orders?
IB had subsequently closed Timber Hill down because it was losing IB too much money apparently. And since then, the liquidity has been horrible. And I don't trade illiquid options. I trade options on stocks like INTC. This one time it took me 2 hours to get an 20-contract option limit order filled and I routed it through SMART order routing; I didn't even direct route to any specific exchange. Now when my order has 100 contracts, like I said I am getting 10,000 partial fills and this is during "normal" market time. In those market crash time, I am just concerned that it's going to be big trouble for me to move my option order.