why not simply use a case where the board is placed horizontally, that should not damage the slots? or provide a dedicated gpu slot with a riser-like mount tha

why not simply use a case where the board is placed horizontally, that should not damage the slots? or provide a dedicated gpu slot with a riser-like mount that allows for gpu to be mounted separately from the actual board ( something what laptop owners do with external gpus) ? this way gpu could be any size and might have cooling on either side - or an external solution.