Mouselook without holding the mouse button... FIX
For anyone looking for an easier way to mouselook, there are a few different options. Although the "Improved PC control scheme" script program at Nexus Mods is a wonderful tool for helping to improve DAI flawed UI, some people can't get it to work. Turn out that Windows has a built feature which can, in a way, allow you to turn mouse look on and off fairly easily.
Just go to your mouse properties in control panel and enable "click lock". This allows you to hold any mouse button for a predefined period of time and have it remain clicked until you click again. It's not a perfect solution, but for those of you with issues running this tool, hopefully this might be a helpful alternative. Just remember to turn off when you exit the game. I had my interval set pretty short and I found myself accident highlighting and dragging anything and everything I clicked.
Also, I tried using mouse keys, but it didn't work as well. Fastest way to try it out is to press "ctrl-alt-num lock" and then click yes. Mousekeys can then be toggled on and off by pressing the num lock key. With Mouse Keys turned on, you can press the numpad 0 button to toggle holding down the mouse button. To hold down the right mouse button, press the numpad minus button and then press numpad 0. It works but just barely, cause it's kind of a pain to have to reach over to the numpad and press 0 every time you want to mouse look... anyway... here's hoping patch 3 will be released soon with some major ui improvements. More than likely though, it will be a while before it's released, at which point we PC players will more than likely be shafted again.