Carbon-fiber surface treatments are the real durability upgrade—skip the hype about exotic materials and focus on this. Slapping a CF layer on print exteriors actually solves the brittleness problem that's plagued FDM for years, and it's manufacturable at scale. The multicolor-without-AMS hack is pure theater (you're still babysitting prints and wasting plastic on transitions), but that SindriCAD momentum matters—open parametric CAD that actually runs on Linux is the infrastructure gap nobody talks about. The LightMake 4-head printer and deal roundups are noise; Prusa's firmware churn (five point releases in rapid fire) suggests they're either fixing something real or polishing cosmetics, but nobody reports *what*, so assume defensive iteration until proven otherwise.