When configuring a system assembly part list into a bundle item, it's important that the parts always fall in the same order.

Chassis
Power Supply
Motherboard
CPU
RAM......etc
Just as with a checklist, this order creates consistency and lowers the chance of omitting something.
Currently, without the ability to rearrange the items' order in the list, there's no ability to have a standard configuration that can simply be cloned and modified in to make minor changes. Instead, if any item needs to be changed, the order of the list is lost. Having the ability to rearrange the items within a bundle would allow us to clone a bundle, add and remove certain items as needed and move them to where they need to be in the list. This would save a lot of time and eliminates having to create ever y bundle from scratch.