Currently the preview is only active when you are in the layout tab, but leaving this open when you are in other tabs would be preferable to be able to see how your changes effect the previewed frames, I also think that it would be nice to have the preview show more than just an outline of the frames (like the indicators). Also adding a %scale value to the preview frame to the right of the main options frame would be nice to know how much the preview is upscaled (it also looks like the scaling is only 100%, 200%, etc... but I can only guess because it doesnt tell the upscale %)
Currently the preview is only active when you are in the layout tab, but leaving this open when you are in other tabs would be preferable to be able to see how your changes effect the previewed frames, I also think that it would be nice to have the preview show more than just an outline of the frames (like the indicators). Also adding a %scale value to the preview frame to the right of the main options frame would be nice to know how much the preview is upscaled (it also looks like the scaling is only 100%, 200%, etc... but I can only guess because it doesnt tell the upscale %)