Currently, I am wearing armor that looks terrible with a backpack attached, so I keep mine hidden. However, whenever I swap to a kit, I get a sometimes even bulkier attachment than my usual backpack! The real kicker is… it completely ignores my selection to hide my back slot item. ;_;
Another situation where this would be useful- some female engineers have terrible, TERRIBLE clipping issues with the grenade kit, having it completely swallow their head. Very annoying, to say the least. It would also be very useful for them.
So please, if the player has the hide back slot option selected, have the kits respect that and actually hide the backpack. I would use them so much more…