My thoughts is that it’s a far more complicated way of doing things. When I develop my goal is to make things simpler, for both the user and myself, and I look for the easiest solution to the problem that accomplishes what I need to accomplish.
as for your question
1) How can I create a custom field on the regular post that would know the ID of the to-be-created “Image Uploads” post?
2) And similarly, how would I be able to have a custom field on the “Image Uploads” post that would know the ID of the post that created it?
the answer to both of then is “none that I know of”.
It might be possible to move the uploaded images to a new post after they were uploaded and create the new post then and then update the post being saved. But like I said, seems like a lot of work when all you really want to do is display the newest values on the home page.
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