Exactly that is possible (within certain limits). It is absolutely uncommon in a single-family house. In a single-family house, you usually have a fairly small ventilation unit, rooms where air is extracted, and rooms where air is supplied. The rest is overflowed. That is the draft you feel at your doors. To be able to realize different volume flows, you need a significantly larger ventilation unit, considerably more piping, valves... But above all, separate supply and exhaust air in all areas. No or very little overflow area. For example, our technical room with the servers (where most of the waste heat is generated) has twice as many supply and exhaust air outlets as the adjacent fitness area, even though it is 2.5 times as large. The door in between has a continuous seal. This is mainly because of the sound. Since the supply and exhaust air are in the same room, no pressure differences arise to the adjacent room. The design of the separate supply and exhaust air valves determines the general design of the volume flows. Through valves in the pipes, ceiling valves, and the ventilation unit, the volume can still be adjusted. What is not possible, for example, is to raise the fitness area to the same volume flow as the technical room (considering the room size). There are simply not enough inlets and outlets available here. Now I also understand why you were so critical of the climate solution. With a "normal" controlled residential ventilation design, it would make little sense for several reasons.