I’ve interpreted this as a deep-dive for DIY keyboard enthusiasts (given "60% layout" and "macros") and PCB designers (given "Sprint Layout" software).
Mara, Sprint’s layout engineer, traced the channels with one finger. Her index felt like a metronome as she considered mounting tolerances and the smear of tool marks along the underside that betrayed a hand-finishing stage. “Look here,” she said, nodding toward a pair of recessed anchors beside the spacebar area. “Custom stabilizer geometry. Maybe a new style of low-profile stabilizer. The cutouts are too precise for aftermarket mods.” macros sprint layout 60 top
All on a 60% top row, using less than 20 minutes in Sprint Layout. I’ve interpreted this as a deep-dive for DIY