I’m about to buy lightburn after a trial and comparing with RDWorks. I largely use keyboard and stylus for this work, and lightburn actually works with a stylus, whereas RDWorks has horrible support. Many other much more intuitive features with lightburn as well,.
However, there is one feature that would be highly valuable to me: scroll bars for the work area. Yes, you can zoom and pan, but this is a bit of a pain. I saw that you were looking to add gesture support, which is great but I’d like to add my vote to the inclusion of scrollbars. Both Inkscape and Paint.net support this (two tools I use in conjunction with laser engraving) and it would be great if they all had roughly similar controls when working in the creative space.