Hi again,
OK, I have double-checked my laptop screen resolution and the highest it will go is 1366x768. The next step below that is 1280x720, then 1024x768. I run it in 1366x768 all the time. I do not have any issues within Windows with anything being too small. I tried the executable file 'compatibility settings' DPI modifications that you suggested, but unfortunately that made no difference, even after "resetting windows" in SLX settings.
It isn't so much that the in-game icons are too small for me to see them clearly, it's more that there seemed to be a lot of empty space to the left, and right of the minimap. I have found during gameplay that the small size of the icons makes it much easier to click the wrong one by mistake when skills have to be selected very quickly (without using the pause key). There is a minor issue with clarity of the icon graphic when they're too small, but with enough time I would no doubt become familiar enough with them for this not to be too much of an issue. Although that could take a while with all the extra skills available
I have tried, as you suggested, turning off the minimap, which definitely filled the entire width of the panel/screen. The two attached screen photos show the results.
The first photo has the map off and the default zoom level set to 1x, for both 'zoom' and 'panel'. The main level area is then too small (zoomed out, although this can be adjusted with my mouse scroll wheel) but the panel is filling the entire width of the screen, now almost too large, if anything.
The second photo is with the default zoom level set to 2x for 'zoom' and 1x for 'panel' - changing the panel zoom has no effect. This is the most ideal way for me to configure this that I can find, after a bit of experimentation. The panel still feels a little too big, but much better than it was in my earlier photos, with the minimap enabled. I will probably stick with this from now on, on this laptop, unless future modifications to SuperLemmix require tweaking these settings.
I do appreciate that my laptop is now a little long in the tooth and doesn't support 1920x1080, which would be ideal. I will have to look into upgrading it soon.
I will also try playing SLX on my desktop PC - which is older, but I have a really good 1080p IPS monitor, and run Windows 10 in 1920x1080. I expect that I'll get more favourable results on that.