Possibility to open windows with controlled residential ventilation - planning ideas

After we decided to use a controlled residential ventilation system, a change in thinking regarding the possibility of opening windows may now arise. I would appreciate corresponding experience from your side on this matter.
We would design the larger glass surfaces in the so-called living area in a 1/3-2/3 ratio, each with one casement door (no tilt-and-turn function); the large window at the dining table would even be completely fixed glass, and in the individual rooms at least partially operable casement windows.
Originally, I wanted to be able to open everything to the maximum extent, to be able to carry even larger items inside if necessary, and especially to always ventilate at 150% because I am a fresh air fanatic. However, this fresh air is now always already inside the house through the controlled residential ventilation system, and ultimately I would only have to switch the button in my head that previously told me to finally open all the windows wide.
Thus, I could install significantly more fixed glass, for example also in the area of the air space, where I had actually planned an automatic opening for ventilation.
Somehow, I have the feeling that I should still be able to open everything, which is probably only a feeling but not a necessity.
For example, especially in the bathroom or even more so in the kitchen, I could place a very wide band of glass without interruptions... but then I would not be able to open the window.

What am I forgetting in my considerations, or what suggestions do you have on this topic?

From my original feeling, I wanted to be able to open everything as much as possible, if necessary also bring in something larger from time to time, and especially always be able to ventilate at 150%, because I am a fresh air fanatic. This air is then always already in the house through controlled residential ventilation, and ultimately I would only have to flip the switch in my head, which so far told me, finally open all the windows wide.

If fresh air for you is only a mixture of temperature and humidity content – go for it. Don’t forget that you are a human being and not a measuring instrument. Surely you can tell yourself that the air quality is identical and refer to appropriate parameters. From your posts, I read that you are a life-experienced person. Don’t start convincing yourself of anything. For me, fresh air also has to do with smell and air movement. Moreover, a room changes acoustically with wide-open windows and it gives me a different “pressure feeling.” Just think, for example, about how differently fresh winter air feels from day to day, how addictive the air in early spring is, and how differently invigorating air often is before, during, and after rain. Living with a heating system with mostly closed windows and doing without that – would not be an option for me voluntarily.

Every bunker has a controlled residential ventilation system, but as you already write, fresh air fanatics need something better, in addition to openable windows and doors

Controlled residential ventilation is definitely not comparable to ventilating through windows. As mentioned, temperature equalization is not possible at all with it. Also, the effect of suddenly flooding the house with fresh air after cooking or similar activities is not achievable. Fixed glazing would never be an option for me.

I need contact with the garden and have normal patio doors everywhere. And I also enjoy that in the summer. And if my husband is just working outside on the side of the house, I can reach him quickly. Remember: they also want to be cleaned. Exterior panes can also be cleaned well from the inside when the blinds are closed. Then nothing gets smeared. Keep the possibility to feel the "outside". You can ventilate with the [Kontrollierte-Wohnraumlüftung].

I need the connection to the garden and have normal patio doors everywhere.

Same for us. In the open-plan area there are 3 window sections each 3.10m wide. The current plan is to make the middle "block" with the large dining table in front as fixed glass, so without any glass division, and to implement the 1/3 - 2/3 solution in the other two blocks (kitchen + living). That would mean having 2 patio doors from the open-plan area each about 100cm wide. I wanted the middle part to be foldable because I had that once, but then the front would be divided into three parts.....hm....I'm kind of attached to that idea right now. But in any case, we would have 2 doors each about 1m wide. 3.10m into two parts probably works less well and I don't really like lift-and-slide doors. I understand it that you also have "only" hinged doors? Here is the current window version planned there, the terrace extends across the entire length of the house; the wood stove is located at the bottom left on the ground floor: