Key limitations of this study lie in the purely geometrical nature of the compression algorithm employed. It effectively reduces the pore spaces between the solid materials (fiber and binder) along the z-axis until a defined compression is achieved. Consequently, when further compression is attempted and no spaces left between the solid materials, the algorithm overlaps the solid materials, leading to a violation of mass conservation. In addition, this study does not cover the convection heat transfer through the domain. Future research in this area could incorporate the mechanical properties of the material to account for the movement of solid components within the domain under compression. Additionally, employing alternative optimization algorithms could enable a more extensive exploration of manufacturing parameters to identify the optimal properties for generating GDL microstructures. Despite these limitations, we believe that our approach paves the way towards efficient digital tools for autonomous optimization of GDL manufacturing processes.