I am not sure what all the fear is about? It is simply an improvement on what already exists.
You cannot trade between the marks on SuperSoes or SNET... and it continues that way on SM.
It offers a one stop shopping for Nasdaq instead of using SuperSoes for market makers and SNET for ECNs.
It also, keeps the SNET alive under a new name "Directed Orders"
Via a Direct Order you will be able to access Liqidity Tracker. This send your order to the market maket who last took an opposing position in that security.
It can only be better than what exists today. ECNs are not forced to join but almost certainly they all will. This does not mean you cannot post your orders on an ECN.
It will show aggregate price levels 5 prices below. But there are 4 different quote levels available.
Basically, when you want to hit the bid or offer, it will be your quickest fill. Although, inherently expensive.
Hope this helps calm the nerves a bit...
