The Product Idea boards have gotten an update to better integrate them within our Product team's idea cycle! However this update does have a few unique behaviors, if you have any questions about them check out our FAQ.
What part of the app authoring UI are you requesting we add up/down buttons to? There are up/down buttons when creating the interface in the interface designer.
For instance, I'd like to be able to switch the position of the field EQUNR manually using the up/down buttons (see screenshot below). Referring to the post linked above, I got the information that this would not be possible.