Updating a custom order using a number field is painfully tedious.
Currently to set a custom order within a collection, I've always set a number and then sort by that order smallest to largest. Though when i would like to change that order, it is a tedious task of shifting everything. I've tried incrementing by 10's to allow for quick insertions (like adding a new item at 15) tho am not of fan of how disorganized this feels.
Have a system generated 'index' property similar to a 'date created' that would allow for custom ordering of collection items. Not married to how you then update the order but would love the simplicity of dragging the item up or down within the list.