I was playing this morning and came up with an idea. I know you are not looking at adding 'mechanic' changes to A18, but you also said that if the idea is good enough it will gain traction, so here it goes.
~ Currently cupboards that are open signify that they are not searchable, and that streamlines looting and is all good. IMHO
~ If you want those cupboards to be functional the only way is to destroy them and make new ones.
~ which is not hard even day 1 they are easily crafted and replaced.
~ My idea to streamline this is:
~ make the open cabinets 'fixable/ repairable' and then they are 'fixed/ repaired' the door shuts and they are usable.
I do not know the logistics of this, but I think of it like a damaged block on the side of a POI that you can see through. You repair it and it becomes a solid wooden block. It seems like the cupboards could do the same thing, but repair into a functional cupboard. This would save time not having to craft new ones after knocking out the old ones. Just four right clicks with a stone axe, a cost of 4 wood and boom functioning cupboards.
Edit to add:
~ this could be done with fridges and ovens also. Repair with a wrench and costing scrap metal and maybe some electrical or mechanical parts or both and boom the door closes and you have a storage container. (as that is all the functionality they have for now.)
I know this is a little thing and probably a bit nit picky, but there it is. Have a great one!