1. In our personal experience, we found Backlight to be a little bit heavy. We want to focus heavily on augmenting existing processes, rather than change how teams work. There definitely is a time and place for Backlight though, we think its an awesome product!
2. We're currently focused on the developer experience, but we believe that working with designers is part of the developer experience! We like to think of ourselves as the "translation" layer between Figma and code. A direct Figma integration is in our roadmap ;)