At the moment Arsenal will only show items with a certain functionality in the "Misc. Items" category on Uniform/Vest/Backpack. As it stands those items are:
Mine Detector First Aid Kit Medkit Toolkit
For any mod creator to have their items show up in this category, they need to be classified as one as the above. The negative effect is that this will also give that item the abilities of that item. For example this is what the ACE3 mod currently does:
class CfgWeapons {
class ItemCore;
class ACE_ItemCore: ItemCore {
type = 4096;
detectRange = -1;
simulation = "ItemMineDetector";
};};
All of their items, for example bandages, morphine and the like, will inherit from that base class and therefore show up in Arsenal. Unfortunately that also makes these items into mine detectors, breaking mine detection if the MineDetector item is also equipped (see #23921 and #23926).
Any of the other options above aren't much better.
So we need a way to classify an item as a "Misc. Item", so that Arsenal will show it and we don't end up breaking existing functionality.