To solve the problem, the slicer would only need to determine the external envelope dimensions for all printed parts (as they are placed) and then add or remove support for printers as required.
They could add a layout preview to the slicer to show the extent of the other printers. Essentially, guide marks where to place model parts to gain full compatibility.
Some things will never work though.
I have tried printing delicate models on the A1 mini & A1 that fail, yet work perfectly on the P & X series. The difference is that the motion of the bed-slingers causes the models to dislodge, even using additional adhesion options.