New bomber + multi images - Would be possible to make this example?

hello, I have just found this image in Google and I know that one the new features of the new bomber + is that it has unlimited number of image inputs instead of only 5, but I am unable yet to understand how this unlimited image input works, as it has only ONE input, so it depends totally on the map switch but this has also only 10 input, so then how you build a filter that can be able to make an image like the example below?

And also, do I have to load each image one by one myself into each image input? or there is some new way way to load fr om a folder or a list as it was told somewh ere?

Because I think that in the below image may be perhaps at least 200 images ( maybe more) and putting them all one by one would be very awkward and tiresome

Thanks for any help

Enjoy your precious creative time get chewed up by this monster filter.

Basically the idea is to nest the map switch within a map switch. So it's first picking an image at random then from the selection of randomness, it picks amongst the input. 10 inputs in a single map switch so 10 inputs of map switch each with an input. 10*10=100.

100 Input Bomber.ffxml

Somebody needs to make the 10,000 image bomber. That'll solve everybody's problems.