my idea is add Requirement call "hatch".
it is see target block's inventory and
check/consume/trans/replace/add
some kind
energy/fluid/item/exp/else.
this mod is aleady can have no fuciton machine like custom chest so why not?

Any kind of multiblock features is not planned at the moment, I'm not against that idea but that's not a priority right now so don't count on it soon.