When sourcing gaming cases, prioritize Form Factor Compatibility (ATX, Micro-ATX, or ITX) to ensure they meet your target market's motherboard needs. Thermal Management is critical; look for cases with mesh front panels, support for at least 360mm liquid cooling radiators, and multiple 120mm/140mm fan mounts. Additionally, verify the GPU Clearance (ideally >330mm) to accommodate modern high-end graphics cards and Cable Management Space (at least 20mm depth behind the motherboard tray) for a clean build.