I agree some sort of more practical solution has to be created than just some items not being destroyed here or there. It would work for conveyor where I imagine mechanical arms take away your items. Slime TF could drop them on the ground instead of melting with you.
Overall, it's a lot of new mechanics so I think it's best to keep them for the eventually inventory rework. Some mechanics also only start making sense once the map becomes sufficiently large and that will take more updates, regardless of what areas they will be adding.