hopefully the guys who are talking about a "retarded workflow" without dual monitor support are smart enough to know that there is a nice workaround for dual monitor support in live. sometimes i think i should write this tool as an official live plugin and sell it for shit loads of money.
really i don´t get the problem!? what would be the most used dual monitor situation? i guess most user would like to use a mixer on one screen an the arrangement on the other screen. a second option could be arrangement on one screen and mixer on the session view on the second screen. ok there are a couple of other possibilities but i think this would be the most used way. so why you don´t use max4live for this? ok some people could say "i don´t want to buy max4live to use dual monitor support" but with live 9 suite you will get it anyway.
by the way this is possible since round about 3 years, but i think the most of you know this.
when you can update one of those floating mixer m4l plugins to always update itself whenever you insert a new track or delete a track, have group and ungroup buttons for tracks, update it's number of sends according to have many sends you have, aswell as let us detach to editing window (midi, or arrangement, then), as well as detach the browser, then yes, you can say that it already works.
otherwise, you have a very finicky workaround that also requires extra addons to work, and even then requires to be setup beforehand, and needs to updated manually.
not exactly the same, is it?