Just made my own! Works super and I am so happy about it!
Here are some things I noticed, change and that I screwed up with:
I tried to use a USB to Serial TTL microchip, but went back to the Micro Pro as it seems more stable and easier to get in the USB port back of the computer then the big PCB. Additionally the USB to TTL made my computer to Blue Screen when I unplugged the display, so that is gone.
The size of the Nextion display mounting holes did not match with my 3D printed box mounting holes, they where off with 0,5 -1mm that was solved with some drilling.
I changed so that I use the touch screen to go between pages or views. it was somewhat easy via the Nextion editor but its definitely easier to use the button option. I hade to add "page delta" more or less everywhere, then you can just assignee a button in Simhub and your done with it ;)
Last and not least! Thanks for sharing and adding a great instruction on it aswell :)