I recall Epic once said something like "But we lost the source code to the original games". Maybe someone can convince them that a digital re-release of the original JJ2 is fine as-is. All it may need is the DirectDraw wrapper to make fullscreen work properly on Windows8/10 with NVIDIA or ATI drivers. And including third party software to make games work is allowed by GoG.com for all I know, as the vast majority of games include DOSBox and old 3D games designed for Voodoo/Glide drivers (such as Rayman2) come with nGlide to make them work on newer systems.