I think that it would be really cool if you could set the max amount of resourses that can go into an object such as merger, for example you need 4 resourses for craft and you can set it to 5 so you don't have 100 inside. So you can have a splitter that will turn all the resourses that aint used by that object into a container. That would help you to not open a fabricator to get resourses if you need them real quick. And would actually solve some of problems that are at the main topic.
For example its needed when you have high production of one resourse and low of another(both of them go into a merger) and you need the first one as a separated resourse aswel.