alt Hacker NewsTake a look at ZSAs oryx configurator for Voyager (52 keys) - you'll see some general configs and development ones etc.
In general, for my moonlander I would have the first layer with all the normal alpha numerics and a few symbols like <>?
But the second layer would contain most symbols, arranged/grouped in a manner which was natural for programming - e.g. grouping keys together like (), [], {},
I've got a moonlander as well (typing on it this very message), and while typing 'clicked' for me in general, I still miss the additional keys of a normal keyboard. I customized mine as well to match my needs, but I don't have a good spot left for '[' and ']'. Have them mapped next to 5 (right) and 6 (left) but that's just as awkward to hit as the normal position they have on the keyboard. Same with "F" keys. Having to press a modifier instead of having just another row on top is a bit meh.
Hitting ALT+F1 in intellij is gymnastics for my hands. alt is super low, modifier for F keys is on the left edge of the right keyboard, and then I need to hit "1" as well.
And there's lots of other little cuts like the ones above with the moonlander. I still enjoy coming back to my MX Master mechanical from logitech for that reason every now and then.