As a person who has been using 3D cad packages for some 18 years now I feel its important to have a well functioning GUI
Now I am not saying that I don't like the GUI in Simplify3D because this is why I choose this software a my Slicer.
If I could make some suggestions that I feel would only improve the GUI of Simplify3D.
1. Have a look a this view cube. Its what I use and I find it a very valued tool. https://www.youtube.com/watch?v=UylNwsDOkdo
2. Also it would be awesome if you could include support for the following. https://www.youtube.com/watch?v=9pAMne1eeTQ
3. It would also be nice if you gave us the ability to change the background color in the view and sliced windows.
4. It would also be nice if you gave us the ability to assign function keys to Simplify3D's hot keys. F1, F2 etc....
I hope you like my suggestions