3D Artist passivestar showcased some hotspotting magic.

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3D Artist and Game Developer Tim Greenberg, known as passivestar, shares a Blender technique for game-ready edge wear using DreamUV and Ucupaint. The method leverages DreamUV's HotSpot feature for UV unwrapping and Ucupaint for texture management. The process impacts all channels, including roughness and metalness, and is compatible with any game engine. Additionally, a custom Blender productivity add-on called Quick Menu was used.

Using Hotspotting For Game-Ready Edge Wear In Blender