Could we have a button to go to live preview, currently have to go to begin printing then tick live preview every time, and it does not work as well as version 4, when it does work, which was one of the most useful features and you took it out of version 5.
You shouldn't need to tick anything. The live preview should begin automatically after you slice and click "Begin printing on machine". I believe that's the same way it worked in V4 as well.
Just keep in mind that if you exit the preview, change settings, re-slice, etc then the preview will stop working since it will be showing the newer sliced file instead.