Wondering if yall at Glowforge have considered integration with Fusion 360? Autodesk is aiming for the fences with this software and since its current plan is to be free for all small business I think it’d be a great fit. Currently they are supporting 3D printing and CAM out of the box, might be something to look into being able to create a design and then just send to Glowforge or even simulate within the package?
Even if they don’t formally support it you can just save to a supported format. Fusion360 supports all the standard cad protocols.
I actually downloaded Fusion 360 after DanS mentioned this was one of the programs you could use for your designs so I imagine it should work. see here at 12:45 https://www.youtube.com/watch?v=DeYB0XC_EiI