in terms of an album type idea, couldn't something be worked out/coded where the OP has a backroom type control that allows him/her to maybe tick radio buttons to designate the order/flow of something?

for example, i have two chapters of something. Chapter 1 is set as priority 1 via the radio button assignment for sorting; Chapter 2 is assigned the number 2 slot.

but now i've reworked, or added something to my Chapter 1 separately.  so i upload, assign it the number 2 slot, and move/assign my Chaper 2 to my 3 slot...